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Contents
require 'ludy/kernel/public_send'
class Proc
def __curry__ *pre # :nodoc:
lambda{ |*post| self[*(pre + post)] }
end
# make the caller be a curried function
# lambda{|a,b,c| [a,b,c]}.curry[1][2][3]
# => [1,2,3]
def curry
class << self
alias_method :__call__, :call
def call *args, &block
if self.arity == -1
begin # let's try if arguments are ready
# is there any better way to determine this?
# it's hard to detect correct arity value when
# Symbol#to_proc happened
# e.g., :message_that_you_never_know.to_proc.arity => ?
# i'd tried put hacks in Symbol#to_proc, but it's
# difficult to implement in correct way
# i would try it again in other day
self.public_send :__call__, *args, &block
rescue ArgumentError # oops, let's curry it
method(:call).to_proc.public_send :__curry__, *args
end
elsif args.size == self.arity
self.public_send :__call__, *args, &block
else
method(:call).to_proc.public_send :__curry__, *args
end
end
alias_method :[], :call
end
self
end
end
Version data entries
10 entries across 10 versions & 1 rubygems