I'm trying to automate building a dispatch table - or at least, to minimize keystrokes.
Please suggest ways to achieve the desired result:
use strict;
use warnings;
my %dispatch = (
normal => sub{"$_[0] Normal dispatch"},
map( {$_ => sub{"$_[0] Sub returns $_"} }
qw| Uno Dos tres|),
);
print $dispatch{"normal"}->(0),"\n"; # 0 Normal dispatch (as expected)
+
print $dispatch{"Uno"}->(1),"\n"; # WANT: "1 Sub returns Uno"
print $dispatch{"Dos"}->(2),"\n"; # WANT: "2 Sub returns Dos"
This currently prints:
0 Normal dispatch
Use of uninitialized value $_ in concatenation (.) or string at .\test
+dispatch.pl line 5.
1 Sub returns
Use of uninitialized value $_ in concatenation (.) or string at .\test
+dispatch.pl line 5.
2 Sub returns
Also - is there a NAME for what I am attempting ? "Early evaluation of $_" ?
"Avoid strange women and temporary variables."
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