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Perl Programming Documentation, also called perldoc, is the name of the user manual for the Perl 5 programming language. It is available in several different formats, including online in HTML and PDF. The documentation is bundled with Perl in its own format, known as Plain Old Documentation (pod).
The strict definition of an undefined value is a superficially valid (non-null) output which is meaningless but does not trigger undefined behaviour. For example, passing a negative number to the fast inverse square root function will produce a number. Not a very useful number, but the computation will complete and return something.
The United Nations Democracy Fund (UNDEF) was created by UN Secretary-General Kofi A. Annan in 2005 as a United Nations General Trust Fund to support democratization efforts around the world. It was welcomed [ 1 ] by the General Assembly in the Outcome Document of the 2005 World Summit (A/RES/60/1, paragraphs 136–137) and was created by the ...
The Chicken Dance is an example of a line dance adopted by the Mod revival during the 1980s. [18] The music video for the 1990 Billy Ray Cyrus song "Achy Breaky Heart" has been credited for launching line dancing into the mainstream. [2] [19] [20] [21] In the 1990s, the hit Spanish dance song "Macarena" inspired a popular line dance. [22]
A pod parser always assumes that the file it is parsing doesn't start with pod; it ignores all lines until it sees a pod directive. pod directives must come at the beginning of a line, and all begin with an equal sign. The pod parser will then assume that all following lines are pod, until it encounters a line consisting of the "=cut" directive.
The phrase could also come from the idea of race horses "breaking their legs" (AKA how they're standing) at the starting line, which some riders believed was good luck and would lead to a good race.
The second line in the canonical form includes a semicolon, which is used to separate statements in Perl. With only a single statement in a block or file, a separator is unnecessary, so it can be omitted from the minimal form of the program—or more generally from the final statement in any block or file.
An undefined variable in the source code of a computer program is a variable that is accessed in the code but has not been declared by that code. [1]In some programming languages, an implicit declaration is provided the first time such a variable is encountered at compile time.