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cpressey/Calling an anonymous function directly in various languages.md

Last active June 1, 2020 15:55
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Calling an anonymous function directly in various languages
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Calling an anonymous function directly in various languages.md

Just a little survey of what code to create an anonymous function and immediately call it looks like in a handful of high-level languages. All of these expressions should evaluate to 10.

Language Code
Python (lambda x: x+1)(9)
Ruby (lambda {|x| x+1}).call(9)
Lua (function(x) return x+1 end)(9)
Erlang (fun(X) -> X+1 end)(9)
Haskell (\x -> x+1)(9)
Scheme ((lambda (x) (+ x 1)) 9)
Perl (sub { @_[0]+1 })->(9)
Julia (x -> x+1)(9)
ES5 JavaScript (function(x) { return x+1 })(9)
ES6 JavaScript (x => x+1)(9)
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