GAWK Namespace Uses by Example
I don't know if this discussion group is the appropriate place to report
by example some GAWK only features in more detail than I found elsewhere.
NOT ANY BUGS. Just useful (to me) example code.
If there are more appropriate places, blog, etc., for this type of thing, please let me know.
BEGIN{
# Use @ns variables for documentation, e.g. constant::pi; maxvalue:foo; minvalue:foo
# Demo assign @namespace VARiables WITHOUT FORMAL @namespace DECLARATION printf("constant::pi=%s\n",constant::pi=3.14159); #=> constant::pi=3.14159 (success)
printf("foo::test=%s\n",foo::test=1); #=> foo::test=1 (success) printf(""foo::test=%s\n",++foo::test); #=> foo::test=2 (success)

# Test declare @namespace FUNCtions without formal @namespace declaration xyz::foo(); #=> xyz:foo called w/out formal @namespace declaration # successful! (see after BEGIN{} ends)

# Note: ns::names are roughly analogous to a pathname, ns\name
# Note! except only one level deep (only one ::) per Eff AWK Pgming Guide

# silly observation; not recommended style
foo::foo("direct call"); #=> foo:foo called: direct call (success)

# test @ns INDIRECT FUNCTION CALLS
indir1="foo::foo"
@indir1("@indir1 indirect call") #=> foo:foo called: @indir1 indirect call
# (success)

ns::indir2="foo::foo"
@ns::indir2("@ns::indir2 indirect call") #=> foo:foo called: @ns::indir2 indirect call
# (success) I was almost surprised it worked so nicely ...

# Test two levels deep foo::moo::debug just to be sure ...
#x printf("foo::moo::debug=%s\n",foo::moo::debug=2); # FAILS!
#x gawk: C:\Gtest\nsmespsce.awk:12: error: identifier `foo::moo::debug': namespace separator can only appear once in a qualified name
# Use: don't
exit;
}
# NOTE: @namespace "xyz" NOT declared, still in awk @ns
# test @ns FUNCtion declaration WITHOUT FORMAL @namespace DECLARATION (from within awk @ns)
function xyz::foo(){ printf("#=> xyz:foo called w/out formal @namespace declaration\n");}
# call from BEGIN was successful!

# NOTE: FORMAL @namespace DECLARATION example (don't use foo::foo for real ...) @namespace "foo"
#! foo::foo(note); #=> foo:foo called (success)
function foo(note){ printf("#=> foo:foo called: %s\n",note);} # successful! #----------

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