Re^2: range comparison in given

Replies are listed 'Best First'.
Re^3: range comparison in given by tobyink (Canon) on Jul 10, 2013 at 15:35 UTC
`when` is considered to be particularly confusing, as it does two different things: `when ("foo") {...} # means: if ($_ ~~ "foo") when ( constant() ) {...} # means: if ($_ ~~ constant()) when ( somefunc() ) {...} # means: if (somefunc())` [download] The rules for determining when there's an implicit "`$_ ~~`" in front of the condition usually do what you mean, but are very convoluted, so it's easy to shoot yourself in the foot. `given` has already changed in Perl 5.18 to use `our $_` instead of `my $_` (unless there's already a `my $_` in the current lexical scope). Smart match itself is likely to undergo some simplification. If you take a look at "Smartmatch operator" in perlop, you'll see basically a dispatch table of all the different types of matches it can attempt. This is likely to be cut down to just a handful. `package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name`	[reply] [d/l] [select]
Re^3: range comparison in given by ww (Archbishop) on Jul 10, 2013 at 13:58 UTC
Be afraid; be very afraid! ... unless you're writing one-offs that will never be used again nor ever be used with a later version of Perl. If you didn't program your executable by toggling in binary, it wasn't really programming!	[reply]