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148. lambda declaration
Hyperpolyglot Interpreted Languages: PHP, Perl, Python, Ruby より (2012.05.08)
VBScript
JScript
Perl
$sqr = sub { $_[0] * $_[0] }
PHP
$sqr = function ($x) {
return $x * $x;
};
Python
body must be an expression: sqr = lambda x: x * x
Ruby
sqr = lambda { |x| x * x }