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Perl in a Nutshell, 2nd Edition
book

Perl in a Nutshell, 2nd Edition

by Nathan Patwardhan, Ellen Siever, Stephen Spainhour
June 2002
Beginner content levelBeginner
759 pages
80h 42m
English
O'Reilly Media, Inc.
Content preview from Perl in a Nutshell, 2nd Edition

Assignment Operators

Perl recognizes the following operators for assigning a value to a variable:

=    **=    +=    *=    &=    <<=    &&=
-=    /=    |=    >>=   ||=    .=     %=
^=    x=

Each operator requires a variable on the left side and an expression on the right side. For the simple assignment operator, =, the value of the expression is stored in the designated variable. For the other operators, Perl evaluates the expression:

$var OP= $value

as if it was written:

$var = $var OP $value

except that $var is evaluated only once. For example:

$a += 2;    # Same as $a = $a + 2
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Publisher Resources

ISBN: 0596002416Errata Page