Este documento discute a importância do refactoring no desenvolvimento de software. Apresenta brevemente o que é refactoring e como ele pode melhorar a qualidade e manutenibilidade do código. Também discute estratégias para realizar refactoring de forma efetiva, como usar nomes expressivos, separar responsabilidades, seguir padrões de codificação e usar testes para garantir que as alterações não quebrem funcionalidades existentes.
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Applitools
During this webinar, Anand Bagmar demonstrates how AI tools such as ChatGPT can be applied to various stages of the software development life cycle (SDLC) using an eCommerce application case study. Find the on-demand recording and more info at https://applitools.info/b59
Key takeaways:
• Learn how to use ChatGPT to add AI power to your testing and test automation
• Understand the limitations of the technology and where human expertise is crucial
• Gain insight into different AI-based tools
• Adopt AI-based tools to stay relevant and optimize work for developers and testers
* ChatGPT and OpenAI belong to OpenAI, L.L.C.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...Applitools
During this webinar, Anand Bagmar demonstrates how AI tools such as ChatGPT can be applied to various stages of the software development life cycle (SDLC) using an eCommerce application case study. Find the on-demand recording and more info at https://applitools.info/b59
Key takeaways:
• Learn how to use ChatGPT to add AI power to your testing and test automation
• Understand the limitations of the technology and where human expertise is crucial
• Gain insight into different AI-based tools
• Adopt AI-based tools to stay relevant and optimize work for developers and testers
* ChatGPT and OpenAI belong to OpenAI, L.L.C.
2. Entao você é o famoso
@tarsisazevedo
github.com/tarsis
desenvolvedor globo.com
#cobrateam member - github.com/cobrateam/
Friday, July 1, 2011
3. E vocês?
Tdd?
Dojo?
Python?
Refactoring?
Friday, July 1, 2011
4. esse é voce?
-vou fazer essa gambiarra aqui, e depois eu volto...
Friday, July 1, 2011
ja deu essa desculpa? uma? todas?
5. esse é voce?
-vou fazer essa gambiarra aqui, e depois eu volto...
-queria fazer isso aqui direito, mas nao tenho tempo...
Friday, July 1, 2011
6. esse é voce?
-vou fazer essa gambiarra aqui, e depois eu volto...
-queria fazer isso aqui direito, mas nao tenho tempo...
-esse codigo é tao simples que nao merece um teste
Friday, July 1, 2011
7. esse é voce?
-vou fazer essa gambiarra aqui, e depois eu volto...
-queria fazer isso aqui direito, mas nao tenho tempo...
-esse codigo é tao simples que nao merece um teste
-vou fazer demesmo... jeito porque nunca mais vou voltar
nesse codigo
qualquer
Friday, July 1, 2011
8. e por fim...
• "caro nerd, isso foi feito em dois dias,
então, nao pertube." #priceless - http://
bit.ly/jzpcxj
Friday, July 1, 2011
12. Refacoring
#wtf
melhorar o design do
codigo de um programa
funcional, não
alterando seu
comportamento. -
Martin Fowler
Friday, July 1, 2011
apresentaçao formal
14. Arrumar a bagunça
Friday, July 1, 2011
arrumar um design mal feito, remover codigo duplicado...
codigo facil de mudar, de ler, de reusar e extremamente flexivel.
zerar debitos tecnicos, aceleraçao constante(fisica),
facil achar bugs
15. Fix broking windows
Friday, July 1, 2011
Prag-Prog
a ruina começa com uma pequena janela quebrada.
se vc deixa codigo ruim, logo seu software estará todo cheio de lixo! concerte o mais rapido
possivel!
23. ferramenta certa
Friday, July 1, 2011
conheça a linguagem/framework que voce trabalha; - o que ela pode fazer, - o que nao
pode, - frameworks tem magicas
use as ferramentas para analise estatica de codigo
25. o que meu codigo
ganha com isso?!
Friday, July 1, 2011
legal, mas porque fazer isso se meu sistema ja funciona?
porque mexer em time que ta ganhando?
26. facil de entender
Friday, July 1, 2011
o entendimento do resto da equipe é essencial para um projeto de sucesso.
aumenta a produtividade
27. facil de manter
Friday, July 1, 2011
manter um software é algo muito dificil, e se voce tem um codigo bagunçado e feio, se torna
quase impossivel.
28. flexivel
Friday, July 1, 2011
tornando seu software flexivel fica muito mais facil responder a mudanças mais rapido.
29. reuso
Friday, July 1, 2011
eliminando a duplicaçao de codigo, voce escreve muito menos, e faz muito mais.
isso é lucro $$
31. nomes expressivos
def primes(n):
s=[1,]+range(4,n+1,2)+range(6,n+1,3)+range(10,n
+1,5)+range(14,n+1,7)
for x in (2,3,5,7):
s+=range(x*2,n+1,x)
l=range(1,n+1)
s.sort()
primes=list(set(l)-set(s))
return primes
Friday, July 1, 2011
nomes estranhos, funçao desorganizada, faz muita coisa!!!
32. e o teste?!
from unittest import TestCase
from primes import primes
class PrimesTest(TestCase):
def test_primes_to_30(self):
self.assertEquals([2, 3, 5, 7, 11, 13, 17, 19, 23, 29],
primes(30)
)
Friday, July 1, 2011
primeiro tenho que garantir que o codigo ruim funciona! e por incrivel que pareça, ele
funciona xD
34. nomes expressivos
def primes(n):
s=[1,]+range(4,n+1,2)+range(6,n+1,3)+range(10,n
+1,5)+range(14,n+1,7)
for x in (2,3,5,7):
s+=range(x*2,n+1,x)
l=range(1,n+1)
s.sort()
primes=list(set(l)-set(s))
return primes
Friday, July 1, 2011
primeiro temos que clarear a funçao, colocando nomes expressivos!
35. nomes expressivos
def primes(n):
s=[1,]+range(4,n+1,2)+range(6,n+1,3)+range(10,n
+1,5)+range(14,n+1,7)
for x in (2,3,5,7):
s+=range(x*2,n+1,x)
l=range(1,n+1)
s.sort()
primes=list(set(l)-set(s))
return primes
Friday, July 1, 2011
36. nomes expressivos
def primes(n):
s=[1,]+range(4,n+1,2)+range(6,n+1,3)+range(10,n
+1,5)+range(14,n+1,7)
for x in (2,3,5,7):
s+=range(x*2,n+1,x)
l=range(1,n+1)
s.sort()
primes=list(set(l)-set(s))
return primes
Friday, July 1, 2011
nomes nada expressivos =/
37. nomes expressivos
def primes(n):
sieve=[1,]+range(4,n+1,2)+range(6,n+1,3)+range(10,n
+1,5)+range(14,n+1,7)
for prime in (2,3,5,7):
sieve+=range(prime*2,n+1,prime)
limit=range(1,n+1)
sieve.sort()
primes=list(set(limit)-set(sieve))
return primes
Friday, July 1, 2011
agora temos nomes que fazem mais sentido! porem, ainda temos muito trabalho a fazer!
39. pep8
def primes(n):
sieve = [1,] + range(4, n + 1, 2) + range(6, n + 1, 3) +
range(10, n + 1, 5) + range(14, n + 1, 7)
for prime in (2, 3, 5, 7):
sieve += range(prime * 2, n + 1, prime)
limit = range(1, n + 1)
sieve.sort()
primes = list(set(limit) - set(sieve))
return primes
Friday, July 1, 2011
pep8 - http://www.python.org/dev/peps/pep-0008/
guia de estilo para programadores python - Siga ele e seja feliz!!!
40. nomes expressivos
def primes(n):
sieve = [1,] + range(4, n + 1, 2) + range(6, n + 1, 3) +
range(10, n + 1, 5) + range(14, n + 1, 7)
for prime in (2, 3, 5, 7):
sieve += range(prime * 2, n + 1, prime)
limit = range(1, n + 1)
sieve.sort()
primes = list(set(limit) - set(sieve))
return primes
Friday, July 1, 2011
outro nome nada expressivo =/
41. nomes expressivos
def primes(number):
sieve = [1,] + range(4, number + 1, 2) + range(6, number
+ 1, 3) + range(10, number + 1, 5) + range(14, number + 1,
7)
for prime in (2, 3, 5, 7):
sieve += range(prime * 2, number + 1, prime)
limit = range(1, number + 1)
sieve.sort()
primes = list(set(limit) - set(sieve))
return primes
Friday, July 1, 2011
agora as coisas ja estao melhorando!
43. nomes expressivos
def primes(number):
sieve = [1,] + range(4, number + 1, 2) + range(6, number
+ 1, 3) + range(10, number + 1, 5) + range(14, number + 1,
7)
for prime in (2, 3, 5, 7):
sieve += range(prime * 2, number + 1, prime)
limit = range(1, number + 1)
sieve.sort()
primes = list(set(limit) - set(sieve))
return primes
Friday, July 1, 2011
o nome da funçao nao faz sentido, nao eh expressivo!!!
44. nomes expressivos
def primes_to(number):
sieve = [1,] + range(4, number + 1, 2) + range(6, number +
1, 3) + range(10, number + 1, 5) + range(14, number + 1, 7)
for prime in (2, 3, 5, 7):
sieve += range(prime * 2, number + 1, prime)
limit = range(1, number + 1)
sieve.sort()
primes = list(set(limit) - set(sieve))
return primes
Friday, July 1, 2011
agora qualquer um que bater o olho no nome da funçao ja vai entender o objetivo!
45. e o teste?
Friday, July 1, 2011
nosso teste quebrou, e isso eh um bom sinal!
ele nos da segurança!
46. ops...
from unittest import TestCase
from primes import primes_to
class PrimesTest(TestCase):
def test_primes_to_30(self):
self.assertEquals([2, 3, 5, 7, 11, 13, 17, 19, 23, 29],
primes_to(30)
)
Friday, July 1, 2011
48. Zen of Python
Beautiful is better than ugly.
def primes_to(number):
sieve = [1,] + range(4, number + 1, 2) + range(6, number +
1, 3) + range(10, number + 1, 5) + range(14, number + 1, 7)
for prime in (2, 3, 5, 7):
sieve += range(prime * 2, number + 1, prime)
limit = range(1, number + 1)
sieve.sort()
primes = list(set(limit) - set(sieve))
return primes
Friday, July 1, 2011
zen of python - http://www.python.org/dev/peps/pep-0020/
como tornar seu codigo Pythonico xD | esse codigo nao é nada pythonico, ele é confuso, feio
e nao faz muito sentido! nossa funçao faz muita coisa!
49. Zen of Python
Beautiful is better than ugly.
def is_prime(number):
if number <= 1:
return False
for i in xrange(2,number):
if number % i == 0:
return False
return True
def primes_to(number):
primes = []
for num in range(number):
if is_prime(num):
primes.append(num)
return primes
Friday, July 1, 2011
zen of python - http://www.python.org/dev/peps/pep-0020/
agora está mais claro o funcionamento! dividimos a responsabilidade!
51. ta lindo, mas e se eu
quiser saber todos os
primos até 2.000.000?!
Friday, July 1, 2011
ok, nosso codigo ja pode ir pra producao. porem o cliente agora quer calcular todos os
numeros
ate 2.000.000! e agora o refactoring e o clean code mostram seu valor!
52. vamos ao teste!
from unittest import TestCase
from primes import primes_to
class PrimesTest(TestCase):
def test_primes_to_30(self):
self.assertEquals([2, 3, 5, 7, 11, 13, 17, 19, 23, 29],
primes_to(30))
def test_primes_to_2000000(self):
self.assertEquals([“?”], primes_to(2000000))
Friday, July 1, 2011
53. depois de 13 minutos....
Friday, July 1, 2011
é, ta lento! precisamos refatorar!
55. crivo de erastostenes
Friday, July 1, 2011
crivo - http://pt.wikipedia.org/wiki/Crivo_de_Erat%C3%B3stenes
é um algoritmo para encontrar numeros primos ate um numero x
56. crivo de erastostenes
from unittest import TestCase
from primes import primes_to
from primos_ate_2000000 import primos_ate_2000000
class PrimesTest(TestCase):
def test_primes_to_30(self):
self.assertEquals([2, 3, 5, 7, 11, 13, 17, 19, 23, 29],
primes_to(30)
)
def test_primes_to_2000000(self):
self.assertEquals(primos_ate_2000000,
primes_to(2000000)
)
Friday, July 1, 2011
essa lista tem 148933 itens!
57. crivo de erastostenes
import math
def primes_to(number):
sieve = [index for index in xrange(2, number + 1)]
limit = int(math.sqrt(number))
for index1 in xrange(0, limit):
if not sieve[index1]:
continue
for index2 in xrange(index1 + 1, number - 1):
if sieve[index2] and (not (sieve[index2] % sieve[index1])):
sieve[index2] = 0
return [index for index in xrange(2, number + 1)]
Friday, July 1, 2011
esse eh o crivo!
59. acabou?!
import math
def primes_to(number):
sieve = [index for index in xrange(2, number + 1)]
limit = int(math.sqrt(number))
for index1 in xrange(0, limit):
if not sieve[index1]:
continue
for index2 in xrange(index1 + 1, number - 1):
if sieve[index2] and (not (sieve[index2] % sieve[index1])):
sieve[index2] = 0
return [index for index in xrange(2, number + 1)]
Friday, July 1, 2011
60. mais claro!
import math
def fill_sieve(number):
return [index for index in xrange(2, number + 1)]
def remove_zeros(sieve):
return [sieve[index] for index in xrange(len(sieve)) if
sieve[index]]
def primes_to(number):
sieve = fill_sieve(number)
limit = int(math.sqrt(number))
for index1 in xrange(0, limit):
if not sieve[index1]:
continue
for index2 in xrange(index1 + 1, number - 1):
if sieve[index2] and (not (sieve[index2] % sieve
[index1])):
sieve[index2] = 0
return remove_zeros(sieve)
Friday, July 1, 2011
61. mas...
import math
def fill_sieve(number):
return [index for index in xrange(2, number + 1)]
def remove_zeros(sieve):
return [sieve[index] for index in xrange(len(sieve)) if
sieve[index]]
def primes_to(number):
sieve = fill_sieve(number)
limit = int(math.sqrt(number))
for index1 in xrange(0, limit):
if not sieve[index1]:
continue
for index2 in xrange(index1 + 1, number - 1):
if sieve[index2] and (not (sieve[index2] % sieve
[index1])):
sieve[index2] = 0
return remove_zeros(sieve)
Friday, July 1, 2011
62. agora sim!
import math
def fill_sieve(number):
return [index for index in xrange(2, number + 1)]
def remove_zeros(sieve):
return [sieve[index] for index in xrange(len(sieve)) if
sieve[index]]
def sieve_of_erastostenes(number):
sieve = fill_sieve(number)
limit = int(math.sqrt(number))
for index1 in xrange(0, limit):
if not sieve[index1]:
continue
for index2 in xrange(index1 + 1, number - 1):
if sieve[index2] and (not (sieve[index2] % sieve
[index1])):
sieve[index2] = 0
return sieve
def primes_to(number):
Friday, July 1, 2011 sieve = sieve_of_erastostenes(number)
return remove_zeros(sieve)