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Look up // in Wiktionary, the free dictionary.
The two slashes // may indicate:
- a comment marker in several programming languages including C, C++, JavaScript and Java
- the root directory path in Domain/OS
- the operator for integer division, in Python 2.2+ and other programming languages
- the empty pattern in Perl, which evaluates the last successfully matched regular expression
- the logical defined-or operator in Perl, called the null coalescing operator in other programming languages
- the authority indicator in the URI scheme, which follows a colon (://) from the scheme component
- the descendant-or-self axis specifier in XPath
- a double vertical bar (||) where the vertical line character | is unavailable for technical reasons
- the parallel operator stylized in pseudo-italics
- a caesura in musical notation
- a diaphoneme in linguistic transcription