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Showing content from https://github.com/rkh/tool below:

GitHub - rkh/tool

Make sure you view the correct docs: latest release, master.

Welcome to Tool, the general purpose Ruby library used by Sinatra 2.0, Mustermann and related projects.

Mixin for easy method decorations.

class Frank
  extend Tool::Decoration
  def self.get(path, &block)
    decorate(block) do |method|
      puts "mapping GET #{path} to #{method}"
    end
  end
end

class MyApp < Frank
  get '/hi' do
    "Hello World"
  end

  get '/'; get '/index.php'
  def index
    "This is the index page."
  end
end

Weak reference caching based on key equality. Used for caching.

class ExpensiveComputation
  @map = Tool::EqualityMap.new

  def self.new(*args)
    @map.fetch(*args) { super }
  end
end

Note that fetch is not guaranteed to return the object, even if it has not been garbage collected yet, especially when used concurrently. Therefore, the block passed to fetch has to be idempotent.

Have thread local values without them actually being thread global.

Advantages:

• Values for all threads are garbage collected when ThreadLocal instance is.
• Values for specific thread are garbage collected when thread is.
• No hidden global state.
• Supports other data types besides hashes.

local = Tool::ThreadLocal.new
local[:key] = "value"

Thread.new do
  local[:key] = "other value"
  puts local[:key] # other value
end.join

puts local[:key] # value

Usage with a pre-filled array:

local = Tool::ThreadLocal.new([:foo])
local << :bar

Thread.new { p local }.join # [:foo]
p local # [:foo, :bar]

Enables Ruby's built-in warnings (-w) but filters out those caused by third-party gems. Does not invlove any manual set up.

require 'tool/warning_filter'

Foo = 10
Foo = 20

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