I think using a foreach alias like shown in the docs for substr is a clearer alternative to lvalue-refs.

Maybe, though I've been aware of LVALUE refs, and using them regularly, for a long time, but I've never seen a use of a for alias used that way until I followed your link to a newer set of docs than I have locally.

Comparing:

my $ref = \ substr( $astring, $start, $len );
vec( $$ref, $offset, $size ) = 1;

[download]

To:

vec( $_, $offset, $size ) = 1 for substr( $astring, $start, $len );

[download]

The first one is very familiar (to me), whereas the latter just looks weird.

The presence of \ and $$ref seem stronger clues than the $_ and for.

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In reply to Re^4: vec overflow? by BrowserUk
in thread vec overflow? by Anonymous Monk

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