Re^2: u+ fails to force scalar context to empty list assignment: +( () = ... )

Shorter alternative:

>perl -MO=Concise,-exec -e"$a = +f()" 2>&1 | find "entersub"
5  <1> entersub[t3] sKS/TARG

>perl -MO=Concise,-exec -e"@a = +f()" 2>&1 | find "entersub"
6  <1> entersub[t4] lKS/TARG

>perl -MO=Concise,-exec -e"+f()" 2>&1 | find "entersub"
5  <1> entersub[t2] vKS/TARG
[download]

The first letter of the "word" after the op name (entersub) is the context in which it's evaluated.

Comment on Re^2: u+ fails to force scalar context to empty list assignment: +( () = ... ) Select or Download Code

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Re^3: u+ fails to force scalar context to empty list assignment: +( () = ... ) by LanX (Saint) on Mar 12, 2019 at 02:32 UTC
Interesting! > Shorter alternative: Well ... the sub ctxt() is just using the well documented `wantarray` the rest is only cosmetics to provide readable output. If I wanted to golf, I could also do: `>perl -E"sub f{say qw/s l v/[wantarray//'2']};+f;$a=+f;@a=+f" v s l` [download] Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply] [d/l]
Re^4: u+ fails to force scalar context to empty list assignment: +( () = ... ) by ikegami (Patriarch) on Mar 12, 2019 at 06:16 UTC
So your alternatives to `$a = +f()` are magical code and incomprehensible code?	[reply] [d/l]
Re^5: u+ fails to force scalar context to empty list assignment: +( () = ... ) by LanX (Saint) on Mar 12, 2019 at 08:16 UTC
No.... Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply]


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