Something like this? 

our ($For, $While, $Map, $Grep, $If) =
  qw( For   While   Map   Grep   If)
;

local $For = 'local' for 1;
local $While = 'local' while ! $a++;
map +(local $Map = 'local'), 1;
grep +(local $Grep = 'local'), 1;
local $If = 'local' if 1;

print "For:   $For\n";
print "While: $While\n";
print "Map:   $Map\n";
print "Grep:  $Grep\n";
print "If:    $If\n";

__END__
For:   For
While: While
Map:   Map
Grep:  Grep
If:    local

[download]
Here, all loop constructs introduces a scope for the expression just as they would if it was a block. if however doesn't.

While speaking about blocks for map and grep (and sort): 

map { use strict; } LIST

[download]
fails with '"use" not allowed in expression ...'. A do block can be used to "upgrade" the block though avoid the ambiguity (see ysth's reply: 
map do { use strict; }, LIST

[download]
works. (Interestingly, this uses map EXPR, LIST ...)

lodin

In reply to Re: statement vs. block? by lodin
in thread statement vs. block? by BrowserUk

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