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Contents
module Comparable
# Alternate name for comparison operator #<=>.
#
# 3.cmp(1) #=> 1
# 3.cmp(3) #=> 0
# 3.cmp(10) #=> -1
#
# This fundamental compare method is used to keep
# comparison compatible with <tt>#succ</tt>.
#
# CREDIT: Peter Vanbroekhoven
def cmp(o)
self<=>o
end
end
class String
# Compare method that takes length into account.
# Unlike #<=>, this is compatible with #succ.
#
# "abc".cmp("abc") #=> 0
# "abcd".cmp("abc") #=> 1
# "abc".cmp("abcd") #=> -1
# "xyz".cmp("abc") #=> 1
#
# CREDIT: Peter Vanbroekhoven
#
# TODO: Move String#cmp to string/ directory.
def cmp(other)
return -1 if length < other.length
return 1 if length > other.length
self <=> other # alphabetic compare
end
end
Version data entries
10 entries across 9 versions & 2 rubygems