2016年2月2日 · The => operator in perl is basically the same as comma. The only difference is that if there's an unquoted word on the left, it's treated like a quoted word. The only difference …

2011年4月5日 · Here the sigil changes to $ to denote that you are accessing a scalar, however the trailing [0] tells perl that it is accessing a scalar element of the array in _ or in other words, …

man perlop "perlop - Perl operators and precedence" (at least in UNIX-like) answers this question: "Binary "=~" binds a scalar expression to a pattern match." – U. Windl Commented Apr 1, …

2010年12月30日 · perldoc perlvar is the first place to check for any special-named Perl variable info. Quoting: @_: Within a subroutine the array @_ contains the parameters passed to that …

Perl arrow operator has one other use: Class−>method invokes subroutine method in package Class. though it's completely different than your code sample. Only including it for …

2019年11月10日 · From Perl documentation:. OR List operators. On the right side of a list operator, it has very low precedence, such that it controls all comma-separated expressions …

2012年2月1日 · as a perl beginner, the part that confused me is that $_ is described as the default input and pattern searching space and below there are functions listed that uses ...

2011年6月10日 · However, when I try to google for what each flag means, I mainly get results to generic Perl sites and no specific information regarding the flags or their use is found there. …

2008年10月8日 · With 5.004, the Math::Trig module (part of the standard Perl distribution) > implements the trigonometric functions. Internally it uses the Math::Complex module and some …

Perl prepends a list of directories (colon-separated) passed as the parameter of the -I command-line option to @INC. This can be done in three ways, as usual with Perl options: Pass it on …