Книги автора: Fedora™ Unleashed, 2008 edition
/ Книги автора: Fedora™ Unleashed, 2008 edition
/ honorato bonafe
Книга: Fedora™ Unleashed, 2008 edition
Other Operators
Other Operators
Perl supports a number of operators that don't fit any of the prior categories. Table 25.5 summarizes these operators.
TABLE 25.5 Other Perl Operators
| Operator | Purpose |
|---|---|
~x |
Bitwise not (changes 0 bits to 1 and 1 bits to 0) |
x & y |
Bitwise and |
x | y |
Bitwise or |
x ^ y |
Bitwise exclusive or(XOR) |
x << y |
Bitwise shift left (shifts x by y bits) |
x >> y |
Bitwise shift right (shifts x by y bits) |
x . y |
Concatenate y onto x |
a x b |
Repeats string a for b number of times |
x , y |
Comma operator — evaluates x and then y |
x ? y : z |
Conditional expression — if x is true, y is evaluated; otherwise, z is evaluated. |
Except for the comma operator and conditional expression, these operators can also be used with the assignment operator, similar to the way addition (+) can be combined with assignment (=), giving +=.
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