S
soup_or_power
Can someone please explain what the use :all pragma does? A simple URL
will also do.
Thank you
will also do.
Thank you
S
Sherm Pendley
Have a look at "perldoc Exporter".
sherm--
A
Anno Siegel
Sherm Pendley said:
Oh... good guess. The question had me seriously puzzled.
However, as you know but the OP seems not to, ":all" isn't a pragma in
this case, but an argument for the exporting module's ->import method.
Not everything in lower case that can follow "use" is a pragma, only
if it's the first thing.
Anno
S
soup_or_power
I checked the perldoc Exporter. It doesn't say anything about "use
:all". Does it mean all of the symbols in a module or symbols beginning
with all?
Thanks for your help.
:all". Does it mean all of the symbols in a module or symbols beginning
with all?
Thanks for your help.
P
phaylon
soup_or_power said:
Do you have some more code? "perldoc use" says that "use" can take a
Modulename or a Version-String as argument, but not a plain :all. That
would be new to me. :all is often used by modules to tell their
import-method that we want to have "all" stuff they've got to export. But
that's a design decision for the author.
So, have you anywhere a "use :all" in use? If so, are strict and warnings
turned on? As said, examples would help to make things clear.
S
Sherm Pendley
That's because "use :all" isn't Perl. ":all" is not a pragma or module -
it can't be use()d by itself.
What you're probably thinking of is "use CGI qw
all);" - which *is*explained in Exporter - check the "Specialised Import Lists" section.
The use of ":all" in this context simply means to import the list named
"all". Module authors define their own import lists; one module might
define a list named "all" as exactly that, every symbol. Another might
define it as every symbol except for a few the module author thought
were advanced, dangerous, or otherwise exceptional for some reason.
The import lists that are defined by a particular module should be shown
in that module's documentation.
sherm--