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Binary ``=~'' binds a scalar expression to a pattern match. Certain
operations search or modify the string $_ by default. This
operator makes that kind of operation work on some other string. The right
argument is a search pattern, substitution, or translation. The left
argument is what is supposed to be searched, substituted, or translated
instead of the default $_. The return value indicates the success of the
operation. (If the right argument is an expression rather than a search
pattern, substitution, or translation, it is interpreted as a search
pattern at run time. This can be is less efficient than an explicit search,
because the pattern must be compiled every time the expression is
evaluated.
Binary ``!~'' is just like ``=~'' except the return value is negated in the
logical sense.
Source: Perl operators and precedence
Copyright: Larry Wall, et al. |
Next: Multiplicative Operators
Previous: Symbolic Unary Operators
(Corrections, notes, and links courtesy of RocketAware.com)
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