in reply to Perl oddities

The fact that a comma after a map block is a syntax error:

$ perl -e 'map { $_ }, qw/foo bar/'
syntax error at -e line 1, near "},"
Execution of -e aborted due to compilation errors.

[download]

I'm fine with it not being required, but it shouldn't yell at you if you happen to include it.

"There is no shame in being self-taught, only in not trying to learn in the first place." -- Atrus, Myst: The Book of D'ni.

Replies are listed 'Best First'.
Re^2: Perl oddities
by TimToady (Parson) on Mar 01, 2005 at 20:29 UTC
    The comma after the block is optional in Perl 6. On the other hand, you have to use a block there. The expression form is not supported in Perl 6. Or more precisely, the first arguments will be expected to be an expression that returns a closure to be executed.
[reply]
Re^2: Perl oddities
by dragonchild (Archbishop) on Mar 01, 2005 at 14:36 UTC
    And if you're trying to map your inputs into hashrefs with a comma, you can't. :-/

    Being right, does not endow the right to be rude; politeness costs nothing.
    Being unknowing, is not the same as being stupid.
    Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
    Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.

[reply]
[reply]
[d/l]
        No, you don't need the +: 
            print map {"$_",}, qw/foo bar/

        [download]
        works as well, although you need more characters. I don't think there is any case in Perl where you need unary minus for disambiguation where you can't disambiguate in another way using 2 or 3 other keystrokes.

        Unary plus is just a convenience, not a requirement.

[reply]
[d/l]

In Section Meditations