repository·master·Indexed 23 days ago
https://github.com/pmq20/ruby-packerA tool that packs Ruby and/or Rails applications into a single, portable executable binary. It supports native C extensions and works across Windows, macOS, and Linux without requiring the end-user to have Ruby installed.
MSpec is a specialized testing framework designed for writing specs for Ruby implementations in the ruby/spec repository. It is syntax-compatible with RSpec 2, supporting standard blocks like describe, it, before, and after actions.
Key features include:
Note: MSpec is not a full replacement for RSpec; it provides a subset or superset of RSpec features depending on the context and does not include all RSpec matchers.
In this repository, spec/ruby/ (specs) and test/ (tests) serve different purposes:
spec/ruby/): Designed to document behavior. They use descriptive English to explain what is being tested, typically focus on a single aspect of behavior, and use a syntax like (value).should == expected.test/): Standard assertions using syntax like assert_equal expected, actual.Example of a spec's descriptive style:
describe "The for expression" do
it "iterates over an Enumerable passing each element to the block" do
j = 0
for i in 1..3
j += i
end
j.should == 6
end
endWhen adding new features or modifying existing behavior that changes between Ruby versions, you must use version guards (ruby_version_is) to ensure compatibility with other Ruby implementations. This allows the specs to run correctly across different versions by isolating version-specific logic.
describe "Some spec" do
ruby_version_is ""..."2.7" do
it "some example" do
# Old behavior for Ruby < 2.7
end
end
ruby_version_is "2.7" do
it "some example" do
# New behavior for Ruby >= 2.7
end
end
endStringIO acts as a pseudo IO class that allows you to treat a String as an IO object. However, it has two key differences compared to the standard IO class:
fileno method: Calling .fileno on a StringIO instance will raise a NotImplementedError.StringIO. Any attempts to perform encoding conversions will be ignored silently.The entry.rb program is a specialized Ruby script where the source code consists exclusively of Ruby reserved words. It is designed to run without compile errors, warnings, or runtime errors by carefully structuring these reserved words to satisfy Ruby's syntax requirements.
Key techniques used to maintain valid syntax include:
def, alias, or undef to treat reserved words as method parameters (e.g., def class ... end defines a method named class).defined? with reserved words as arguments.or or and to prevent syntax errors in expressions that would otherwise result in a "void value expression" (e.g., using if begin false or return end then true end instead of if begin return end then true end).retry are placed within rescue blocks, and break/next/redo are placed within looping constructs.Net::Telnet delegates all methods of a socket object (by default a TCPSocket) to the instance. This allows you to use methods like .close() to end a session or .sysread() to read data directly from the host.
Warning: If you use .sysread() while in telnet mode, you should pass the output through .preprocess() to extract and handle telnet command sequences correctly.
Minitest is a suite of testing facilities that provides different styles of testing depending on your needs:
describe and it) and hooks into minitest/unit to bridge assertions and expectations.The Kinaba program computes the first 10,000 digits of Pi using the following series formula:
Pi/2 = 1 + 1/3 + 1/3*2/5 + 1/3*2/5*3/7 + 1/3*2/5*3/7*4/9 + ...
To fit the program within the constraints of the Pi digits (where token lengths must match specific digits), the implementation uses several Ruby techniques:
alias of global variables: Allows accessing the same value from different token-length positions.srand: Used as a value-store because it returns the "previous seed," allowing values to be written without needing a 1-letter = token.* or + are treated as separate tokens. For example, a*b + cdef results in token lengths [1, 1, 1, 1, 4] rather than [3, 1, 4].The Yhara sample script relies on specific Ruby internal behaviors, such as using characters in constants within the Object class and intentionally raising exceptions.
Limitations:
return does not raise an exception in that environment.The program is an obfuscated implementation that avoids conditional branches and arithmetic operations. It simulates the even/odd logic using string manipulation and regular expression matching via eval and String#join.
The core logic relies on an n-length sequence of ", fragments. The double-quote " alternates between opening and closing string literals:
n is even: The last double-quote closes the string, causing the remainder of the eval expression to be treated as a comment. This results in a string of commas, where the regex (.)...\1= matches at index n/2.n is odd: The last double-quote does not close the string, causing the eval expression to include the text 3x+1?. The regex (.)...\1= matches at index 3n+1.This is the logic expressed in a readable format:
n = ARGV[0].to_i
begin
# do nothing
end while begin
puts n
n = (/(.)...\1=/ =~ eval('[",,,,,"'+ '",'*n + ' ?=].join#"].join("3x+1?")'))
endThe program uses a Domain Specific Language (DSL) to generate 3D data files in STL format. By default, it generates wine_glass.stl, but you can modify the shape or create different objects (like a sake cup) by modifying the gen3d block.
In the DSL:
+ and - characters are used for visual representation in the code and have the same functional meaning.gen3d 'ochoko.stl' do
l------------------------l
l-ww------------------ww-l
l-ww------------------ww-l
l-ww++++++++++++++++++ww-l
l-ww++++++++++++++++++ww-l
l--ww++++++++++++++++ww--l
l---wwww++++++++++wwww---l
l----wwwwwwwwwwwwwwww----l
l----www----------www----l
end