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Perl by Example, Fourth Edition by Ellie Quigley

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Appendix A. Perl Built-ins, Pragmas, Modules, and the Debugger

Perl Functions

The following is a complete list of Perl functions and a short description of what they do. Note: The text in parentheses is a reference to the like-named UNIX system call found in Section 2 of the UNIX manual pages. The like-named UNIX library functions are found in Section 3 of the UNIX manual pages.

Table A.1. Perl Functions

Function

Description

abs

abs VALUE

Returns the absolute value of its argument ($_ is the default). Ignores signs.

accept

accept(NEWSOCKET, GENERICSOCKET)

Accepts a socket connection from clients waiting for a connection.

GENERICSOCKET, a filehandle, has been previously opened by the socket function, is bound to an address, and is listening for a connection. ...

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