# New Ticket Created by mt1957
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# <URL: https://rt.perl.org/Ticket/Display.html?id=126796 >
Variable interpolation is simple but with functions it gets wrong?
What I've understood is that everything not looked up from containers
should be regarded as code
and must be placed in curly brackets. That seems not to be the case
regarding functions/methods or at least it is not consistent.
Some examples
my $i = 10;
my $text = 'abc';
say "$i" # 10
say "$i.fmt" # 10.fmt
say "$i.fmt('%04d')" # 0010
say "$i.fmt('%04d')($text)" # Error Cannot find method 'CALL-ME'
say "$i.fmt\('%04d')" # 10.fmt('%04d')
say "$i.m" # 10.m
say "$i.m()" # Method 'm' not found for invocant of
class 'Int'
say "{$i.m}" # Method 'm' not found for invocant of
class 'Int'
One can see that interpretation is triggered by the left round bracket.
So when there is an object using methods without arguments one must use
{} to get the method started. But when it needs arguments, round
brackets do the trick automatically.
When errors pop up like 'Error Cannot find method 'CALL-ME'' it is not
immediately clear that a bracket needs to be escaped.
Greetings,
Marcel Timmerman
