Bugzilla:Languages: Difference between revisions

Bugzilla:Languages (view source)

1,202 bytes added , 12 May 2007

canmove, Confirmed users

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 === Cons ===
-See [http://avatraxiom.livejournal.com/58084.html The Problems of Perl].
+* See [http://avatraxiom.livejournal.com/58084.html The Problems of Perl].
+* In addition, certain syntax things are confusing for new users:
+** The difference between () and [].
+** The fact that %var is a () (which is also the array notation) but {} is $var.
+** The fact that subroutine arguments aren't really subroutine arguments, they're just an array that gets passed to a function.
+** The fact that $hash{'key'} and $hash{key} are the same.
+** qq[] is a string (as is qq{}, etc.), q[] is a string, though qw() is an array.
+** &sub() is resolved at runtime but sub() is resolved at compile time, ''except'' for methods.
+** The conversions from one type to another can sometimes be horrendous to read. Eg: [keys %{ @{ $var } }].
+** $$foo[1] and $foo->[1] mean the same thing.
+** That numbers are compared with "==" but strings are compared with "eq", even though in other places strings are interpreted as numbers if used numerically.
+** Figuring out what's $1, $2, $3, etc. from a regex result. And the fact that $1 and $2 don't get reset if there's no match.
+** That Perl errors are in $@ but system errors are in $!, and when to use which one.
+** That Perl doesn't really have a class system, it just has a package system with @ISA or "use base," "bless," and SUPER::.
 == Perl6 ==