Project Address: Ruby-prof In the previous Profiling tool in Ruby, we listed several of the most commonly used profilers, but just a brief introduction, this time detailing how ruby-prof is used. Ruby-
1. Why Ruby?
Why do many Java developers focus on Ruby? Ruby is a general-purpose scripting language created in Japan 10 years ago. It is a pure object-oriented language. Unlike Java, everything in ruby is an object. Ruby syntax mainly comes from smalltalk, Python and Ada.
Built-in profiler implementation is very simple, in ruby2.2 only 150 lines of code, you can see its implementation profile.rb. The built-in profiler is very convenient to use, just add-rprofile parameters. For example:
Perform:
Ruby-rprofile test.rb
The output results are:
By printing out the results can be very obvious to see the time-consuming method. The built-in profiler is very simple, can only print out such a result, no other
Twitter and which applies to discourse.
2.6 Profile
Sometimes, these suggestions may not be universal. You need to figure out your problem. At this point, you need to use Profiler. Ruby-prof is a tool that every Ruby user will use.
To learn more about profiling, read Chris Heald ' s and my article about using Ruby-
Keywords: Ruby on Rails, instantrails, windows, getting started, tutorial
I always wanted to try Ruby on Rails, but I was not familiar with Apache and MySQL, and I was not confident in setting up the rails environment. So I never started. After learning about instantrails, finally, we set up the Ruby on Rails Development Environment on Windows and started learni
Demonstrate Ruby's six characteristics that are easy to be misunderstood with actual code. The Code demonstrates ruby misunderstanding.
Introduction: if you are a C ++ developer, you need to use Ruby to quickly execute some prototype designs. When you pick up a Ruby reference book (such as Pickaxe) or browse a Ruby web
default quota is:
New generation malloc limit RUBY_GC_MALLOC_LIMIT 16 MMaximum new generation malloc limit RUBY_GC_MALLOC_LIMIT_MAX 32 MOld generation malloc limit RUBY_GC_OLDMALLOC_LIMIT 16 MMaximum old generation malloc limit RUBY_GC_OLDMALLOC_LIMIT_MAX 128 M
Let me briefly explain the meaning of these values. By setting the preceding values, each time a new object is allocated between 16 M and 32 M, and each time the old object occupies between 16 M and 128 M, this object is called at least
Share with us today the basic Ruby Tutorial (http://www.maiziedu.com/course/ruby-px/), which focuses on Ruby Source and Ruby features, here's a look at Ruby 's introduction:Ruby is a purely object-oriented programming language. It was created in 1993 year by as of Japan (まつ
RUBY_GC_OLDMALLOC_LIMIT_MAX 128M
Let me briefly explain the meaning of these values. By setting the preceding values, each time a new object is allocated between 16 M and 32 M, and each time the old object occupies between 16 M and 128 M, this object is called at least once by garbage collection), and Ruby will run GC. Ruby dynamically adjusts the current quota value based on your memory mode.
Therefore, w
Use Ruby to process text tutorials, and use ruby to process text tutorials
Similar to Perl and Python, Ruby has excellent functions and is a powerful text processing language. This article briefly introduces Ruby's text data processing function and how to use Ruby to effectively process text data in different formats,
Example of an interactive program developed by ruby: ruby Development
Implement the interaction function in a terminal similar to pry, ronin, and msf. ripl gem is mainly used here:
1. Call defined methods, such as help2. Be able to execute system commands3. ruby parsing similar to irb/pry
Installation:
gem install riplgem install ripl-shell_commands
Example
Ripl,
Add fire to Ruby: Ruby will become popular again
Ruby, which is widely regarded as a web language, has always been very popular, but it will become more popular now. AltRubies pushed Ruby to a level we never imagined. Is Ruby the preferred choice for browsers, mobile apps,
How to learn Ruby? What do you need to know before you learn Ruby? This is a lot of people want to learn the voice of Ruby friends, I do not give a specific answer, the following to tell you about a predecessor learning Ruby (http://www.maiziedu.com/course/ruby/) learning pr
Gems use proxies in two ways:
Mode one:
>>set http_proxy=http://ip_or_host:port
>>gem Install The_package_name
Mode two:
>>gem list-p Http://user:passwd@ip_or_host:8080-r
Install Ruby-debug-base19There are 2 different ways:Method One:download the. gem file first, then install the. gem file directly, which requires compilation, so you need to take the With-ruby-in
Tutorial on system management by writing scripts in Ruby, and ruby System Management
Introduction
Ruby is an extremely rich, free, simple, scalable, portable, and object-oriented scripting language. Recently, it is widely used in the Web field. To a certain extent, this is attributed to the very powerful Web application development framework Rails, Which is exact
Annotations, variable declarations, Array Operations, and Ruby variables in the ruby tutorial
I read an article "PHP basic tutorial" on "blog Park" two days ago and introduced PHP. D guago also wrote a "Ruby getting started tutorial" when learning Ruby ". It should be noted that this article is suitable for beginners w
To install Ruby, go to the ruby official website to download the Windows Installation Package of ruby1.56. After installing Ruby, open the DOS window and enter ruby-V to display it.
Ruby 1.8.6 (patchlevel 0) [i386-mswin32] indicates that
Ruby on Rails Session 1: How to Build a Ruby on Rails on the Ubuntu., railsubuntuAbout Ruby on Rails
Ruby on Rails is an application stack that provides developers with a framework to quickly create a variety of web applications. ruby on Rails does take a little while to ins
The tailor made for the Basix users among. If you've been itching to try out Ruby and/or Rails, if the Terminal are somewhat new to you, your may find that even the PR Ocess of installing it can generate countless confusing errors. This article would detail the exact steps you need to follow for get Ruby up and running on your Mac. Step 1-RVMWhat are interested to know are that
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