3 ms·
It works without "my" too :) $ perl $num = 3; print $num; 3 (perl v5.32.1, without "use strict" of course)
by ajsnigrutin 5y ago
It works without "my" too :)
$ perl
$num = 3;
print $num;
3
(perl v5.32.1, without "use strict" of course)
- anthk 5y agoAh,TIL. As I always used use strict; use warnings; as something like muscle memory, I didn't know this.
- b2gills 5y agoOne of the things that `use strict` does is enable `use strict "vars"`. use strict; no strict qw(vars); $foo = $bar; That's part of the reason `use strict` is recommended. --- The other major reason is `"refs"`, which disable symbolic refs. Honestly this is *THE* main reason I recommend `use strict`. Symbolic refs are how you did arrays of arrays prior to Perl5. (Among other uses.) use 4.0; @a = 'b','c'; @b = (1, 2); @c = (3, 4); print $a[1]->[1], "\n"; # 4 That can be a security risk if an attacker can insert or change strings in `@a`. It isn't (generally) needed anymore of course. use 5.0; my @a = ( \[1,2], \[3,4] ); print $a[1]->[1], "\n"; # 4 (The only reason `@b` and `@c` existed was to symbolically reference them.)