G'day Ronald,

That's the range operator. See "perlop: Range Operators" for details.

The for loop will set $_ to each of the values, e.g. 

$ perl -E 'say for 1 ..2'
1
2

[download]

That's equivalent to this: 

$ perl -E 'for (1 .. 2) { say }'
1
2

[download]

In the context you show, it's not passing $_ to your coderef (that would be $fetch->($_)). Here's a longer example, showing your posted statement exactly: 

$ perl -E 'my $fetch = sub { say "fetching ..." }; $fetch->() for 1 ..
+2'
fetching ...
fetching ...

[download]

— Ken

In reply to Re: coderef for 1 .. 2? by kcott
in thread coderef for 1 .. 2? by ronstudio

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