On 06/21/2017 11:03 PM, Brandon Allbery wrote:
On Thu, Jun 22, 2017 at 1:51 AM, Todd Chester <toddandma...@zoho.com
<mailto:toddandma...@zoho.com>> wrote:
You want named parameters.
sub MAIN(:$fixed-string, :$extended-regex, ...) {
# $fixed-string and $extended-regex are Bools here,
# True if the corresponding option specified
}
You should recognize this as being similar to named parameters
work for
normal Perl 6 functions, but MAIN exposes them to the command
line like
GNUish long options.
What does the ":" do? and does it give you back the
value associated with it, if there is one?
I guess that means you did not recognize colon-pair syntax for named
parameters.
https://docs.perl6.org/language/terms#Pair see at the end for their use
as named parameters.
Since I assume I'm going to have to read that link for someone on the
list anyway:
:name(value)
:name<value>
:name
:!name
:$name
are all colon-pairs. When used as parameters, they indicate named (as
opposed to positional) parameters.
The first form allows you to associate any variable name with the
parameter name, optionally with a type. The second form is always a
String (and any of the bracketing String forms can be used, e.g.
:foo<<bar>> --- but *not* :foo"bar"; that would need to use the first
form). The final three are always Bools; the last one takes the
parameter name from the variable name.
Thank you!
I have some reading/learning to do.
