function return value in a regexpr

[Jonas]

Dear members,

How can I use a function return value in a regexpr?

$tmp=~s/mysearch/myfunction($1)/;
sub myfunction {
return $v;
}


Thanks in advance,

Jona


-
Jona

 

[Gunnar Hjalmarsson]

How can I use a function return value in a regexpr?

$tmp=~s/mysearch/myfunction($1)/;
sub myfunction {
return $v;
}

You can either use the /e modifier, or you can do

$tmp =~ s/mysearch/${\ myfunction($1) }/;

 

[nobull]

You can either use the /e modifier, or you can do

$tmp =~ s/mysearch/${\ myfunction($1) }/;

The "${\foo()}" interpolation construct is best avoided. It looks
like foo() should be called in a scalar context but in fact it's
called in a list context and all but the last value is discarded.
This is confusing better IMNSO to use "@{[foo()]}" which looks like
it's a list context.

 

[Gunnar Hjalmarsson]

You can either use the /e modifier, or you can do

$tmp =~ s/mysearch/${\ myfunction($1) }/;

The "${\foo()}" interpolation construct is best avoided. It looks
like foo() should be called in a scalar context but in fact it's
called in a list context and all but the last value is discarded.
This is confusing better IMNSO to use "@{[foo()]}" which looks like
it's a list context.

Well, the OP's example function does not return more than one element,
which made me post that example. But, sure, "@{[foo()]}" works
irrespective of how many elements that are returned.