Perl 5 version 32.0 documentation

next

Perl functions A-Z | Perl functions by category | The 'perlfunc' manpage
  • next LABEL

  • next EXPR
  • next

    The next command is like the continue statement in C; it starts the next iteration of the loop:

    1.     LINE: while (<STDIN>) {
    2.         next LINE if /^#/;  # discard comments
    3.         #...
    4.     }

    Note that if there were a continue block on the above, it would get executed even on discarded lines. If LABEL is omitted, the command refers to the innermost enclosing loop. The next EXPR form, available as of Perl 5.18.0, allows a label name to be computed at run time, being otherwise identical to next LABEL .

    next cannot return a value from a block that typically returns a value, such as eval {} , sub {} , or do {} . It will perform its flow control behavior, which precludes any return value. It should not be used to exit a grep or map operation.

    Note that a block by itself is semantically identical to a loop that executes once. Thus next will exit such a block early.

    See also continue for an illustration of how last, next, and redo work.

    Unlike most named operators, this has the same precedence as assignment. It is also exempt from the looks-like-a-function rule, so next ("foo")."bar" will cause "bar" to be part of the argument to next.