Re^2: Spotting an empty array as argument

in reply to Re: Spotting an empty array as argument
in thread Spotting an empty array as argument

good try :) But ...

  DB<262> sub mysay (;+@) { print @_ }

  DB<263> mysay 1,2,3
123
  DB<264> mysay 1..3

  DB<265> mysay 1..3,4..6
456
  DB<268>
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It's enforcing scalar context on the first argument, and this is one of the unfortunate cases where an operator is changing it's meaning on context. :(

Cheers Rolf
_{(addicted to the Perl Programming Language :)

Wikisyntax for the Monastery}

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Re^3: Spotting an empty array as argument by haukex (Archbishop) on Mar 26, 2021 at 22:41 UTC
`mysay 1..3` Ah, a very good point, thanks! Chuma: This once again underlines the fact that, unfortunately (!), you're probably not going to get everything you want here. Perhaps it would also make sense to take a step back and explain what you want to use this function for? And if you think about it again, do you really need to default to `$_`? Or could you split this into two different functions? etc.	[reply] [d/l] [select]

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Re^3: Spotting an empty array as argument
by haukex (Archbishop) on Mar 26, 2021 at 22:41 UTC

mysay 1..3

Ah, a very good point, thanks!

Chuma: This once again underlines the fact that, unfortunately (!), you're probably not going to get everything you want here. Perhaps it would also make sense to take a step back and explain what you want to use this function for? And if you think about it again, do you really need to default to $_? Or could you split this into two different functions? etc.

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[select]

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