Beside the effect of allowing bare words (things that look like an identifier) on its left hand side, a fat arrow has no semantic or syntax difference with a comma. It looks different.

Some people use it to separate function arguments that play different roles, a subset of those only after the first argument. For instance, in (s)printf, the first argument (if there's no file handle argument) is a format, the rest a list. Writing 

    printf $format => $arg1, $arg2, $arg3;

[download]
emphasis the fact the first argument is "special".

It's a matter of style. Use it if you like it, don't use it if you don't.

In reply to Re: bless with => separated args by Anonymous Monk
in thread bless with => separated args by jaa

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