Double tilde

Double tilde (~~ or ≈) may refer to:

Approximation ≈
Double negation ~(~
Smart match operator in Perl, ~~
In PostgreSQL the operator ~~ is equivalent to LIKE

Double binary NOT operator (as used in languages like JavaScript and PHP as a quick way to cast variable as integer, where it is called 'two tildes' to indicate a form of double negation)^{[clarification needed]}

U+0360 ◌◌͠ COMBINING DOUBLE TILDE , a tilde diacritic that spans a pair of adjacent characters: ◌͠◌

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