Sha256: 195473950b76a14980339965cea8119b6cff49416459d33cb93223d6f947e9fa
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Size: 797 Bytes
Versions: 13
Compression:
Stored size: 797 Bytes
Contents
module SlimScrooge
class SimpleSet < Hash
class << self
# Creates a new set containing the given objects
def [](*ary)
new(ary)
end
end
# Create a new SimpleSet containing the unique members of _arr_
def initialize(arr = [])
Array(arr).each {|x| self[x] = true}
end
# Add a value to the set, and return it
def <<(value)
self[value] = true
self
end
# Invokes block once for each item in the set. Creates an array
# containing the values returned by the block.
def collect(&block)
keys.collect(&block)
end
alias_method :to_a, :keys
# Returns set after elements in other have been removed
def -(other)
SimpleSet.new(collect {|k| other[k] ? nil : k}.compact)
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems