Re^2: Checking on live site if subroutine exists

This subroutine sends an email to a member for one they asked for, like a notice when someone they referred joins, etc.

So, does calling it with an eval or checking if it exists actually execute it?

Comment on Re^2: Checking on live site if subroutine exists

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Re^3: Checking on live site if subroutine exists by LanX (Saint) on Mar 27, 2021 at 02:42 UTC
> So, does calling it with an eval yes > or checking if it exists actually execute it? no Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery}	[reply]
Re^3: Checking on live site if subroutine exists by perlfan (Parson) on Mar 27, 2021 at 07:05 UTC
To add to what LanX said, eval effectively hides any errors that might occur when executing what's in the block. Since this is a `.pl` file and `require` happens at runtime, you may get away with just checking if this file contains some expected characteristics before calling require - like actually existing (or containing some expected text). That said, it's better practice to create an actual Perl module and esure it can be found via `@INC` (i.e., via `PERLLIB`, `PERL5LIB`, or judicious use of FindBin + `use lib ...`.	[reply] [d/l] [select]