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Only Do What Only You Can Do
062. index of substring
Hyperpolyglot Interpreted Languages: PHP, Perl, Python, Ruby より (2012.05.08)
VBScript
JScript
Perl
index("lorem ipsum", "ipsum") rindex("do re re", "re") return -1 if not found
PHP
strpos("do re re", "re") strrpos("do re re", "re") return FALSE if not found
Python
'do re re'.index('re') 'do re re'.rindex('re') raise ValueError if not found
Ruby
"do re re".index("re") "do re re".rindex("re") return nil if not found