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Only Do What Only You Can Do
027. comparison operators
Hyperpolyglot Interpreted Languages: PHP, Perl, Python, Ruby より (2012.05.08)
VBScript
JScript
Perl
numbers only: == != > < >= <= strings: eq ne gt lt ge le
PHP
== != or <> > < >= <= no conversion: === !==
Python
comparison operators are chainable: == != > < >= <=
Ruby
== != > < >= <=