This post originated from an RSS feed registered with Ruby Buzz by Daniel Berger. Original Post: Better Keyword Arguments Feed Title: Testing 1,2,3... Feed URL: http://djberg96.livejournal.com/data/rss Feed Description: A blog on Ruby and other stuff. Latest Ruby Buzz Posts Latest Ruby Buzz Posts by Daniel Berger Latest Posts From Testing 1,2,3...

def foo(a, b=0, c:4)
   ...
end

foo(1, 2, c:3) # a=1, b=2, c=3

def foo(*rest, a:4, b:0, **keys)
   ...
end

baz(1, 2, b:2) # rest=[1,2,{b:2}], a=4, b=2, keys={b:2}

# A standard Ruby method declaration
def foo(a, b, c=4)
   ...
end

# Ideal syntax
foo(a:1, b:2, c:3) # a=1, b=2, c=3
foo(a:1, b:2)      # a=1, b=2, c=4
foo(1, 2, c:3)     # a=1, b=2, c=3
foo(1, 3, 3)       # a=1, b=2, c=3

def foo(a, b, *c)
   ...
end

foo(1, 2, 3)            # a=1, b=2, c=3
foo(1, 2, foo:4, bar:5) # a=1, b=2, c=[{'foo'=>4, 'bar'=>5}]
foo(1, 2, 8, baz:5)     # a=1, b=2, c=[8, {'baz'=>5}]