module Fn
Constants
- VERSION
Public Instance Methods
Fn(prc = nil, *rargs, &blk)
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Function pseudo-constructor
Like Symbol#to_proc
Fn(:upcase).call('xxx') #=> 'XXX'
But the resulting Fn
can take extra args besides ‘self`
Fn(:ljust).call('xxx', 5) #=> ' XXX'
Can be used to coerce/convert an existing Proc (compare Integer(), Array())
Fn(->{ |x| x.length }).call('xxx') #=> 3
Or called with a block directly
Fn { |x| x.length }.call('xxx') #=> 3
# File lib/fn.rb, line 101 def Fn(prc = nil, *rargs, &blk) if Symbol === prc Fn { |*args| args.first.send(prc, *rargs, *args.drop(1)) } else Fn.new(&(prc || blk)) end end
Also aliased as: fn