Sha256: f42e1a3613776e6533c41ae07899324c966c15fa52447f3e72392f8c57aeffb8
Contents?: true
Size: 954 Bytes
Versions: 5
Compression:
Stored size: 954 Bytes
Contents
unless (RUBY_VERSION[0,3] == '1.9')
class Symbol
# Turn a symbol into a proc calling the method to
# which it refers.
#
# up = :upcase.to_proc
# up.call("hello") #=> HELLO
#
# More useful is the fact that this allows <tt>&</tt>
# to be used to coerce Symbol into Proc.
#
# %w{foo bar qux}.map(&:upcase) #=> ["FOO","BAR","QUX"]
# [1, 2, 3].inject(&:+) #=> 6
#
# And other conveniences such as:
#
# %{john terry fiona}.map(&:capitalize) # -> %{John Terry Fiona}
# sum = numbers.inject(&:+)
#
# TODO: This will be deprecated as of Ruby 1.9, since it will become standard Ruby.
#
# CREDIT: Florian Gross (orignal)
# CREDIT: Nobuhiro Imai (current)
def to_proc
Proc.new{|*args| args.shift.__send__(self, *args)}
end
# OLD DEFINITION
#def to_proc
# proc { |obj, *args| obj.send(self, *args) }
#end
end
end
Version data entries
5 entries across 5 versions & 2 rubygems