I count 13 characters in test_hdr_good
header_is_good {
has 15 characters.
My personal preference is that if the variable/function returns a boolean, then the name should start with (is|has|have), etc.
if ( has_good_header() ) {...}
use constant HAVE_MODULE_FOO => eval { require Foo; 1; };
my $is_complete = 0;
or occasionally a verb that indicates a yes/no type answer:
if ( $needs_close ) { close FILE; }
But that's just a style issue. The important point is as you said: to have good descriptive names, avoiding abbreviations except for the most obvious ones.
Randy.
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