In response to a P5P posting, I strolled through perlfunc
and came up with a representative list of the scalar context return values for things we normally use in a list context. Surprisingly, more things don't
return a length than do. Here's the list:
|split||length, but @_ side-effect|
|(10, 20, 30)||last element|
|(10, 20, 30)[2, 1]||last element|
|caller||package name (first element of list return)|
|each||key (first element)|
|getpwuid||username (first element)|
|getpwnam||user ID (third element of list return)|
|glob/<*>||"next" item (repeat until undef)|
|gmtime/localtime||printable string (instead of list of components)|
|readline/<HANDLE>||"next" item (repeat until undef)|
|readpipe/``/qx||one item instead of list of lines|
|readdir||"next" item (repeat until undef)|
|reverse||string reverse instead of list reverse|
|select(4-arg)||$nfound (first element of list)|
|times||$user (first element)|
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