I have some constants (defined with `use constant`) that I am desirous of using in a `here` doc. However no interpolation occurs, so the strings naming the constants literally appear instead of their values. What I have resorted to is: assigning variables the values of the constants, and using the variable names in the here doc. Is there a better way to accomplish the desired behavior?
use constant {
OUT_DIR => 'out',
OUT_FIELDSEP => '=',
OUT_FILENAME => 'ks',
OUT_SUFXSTOR => 'storable',
VAL_MIN => 15,
VAL_MAX => 3600,
};
This does not work as intended:
print <<USAGE;
This program does this and that with the OUT_DIR. The filename is
OUT_FILENAME and the file suffix is OUT_SUFXSTOR.
Fields are separated with the OUT_FIELDSEP character. Enter a value
between VAL_MIN and VAL_MAX.
USAGE
What I've resort to doing:
my $out_dir = OUT_DIR;
my $out_fs = OUT_FIELDSEP;
my $out_fn = OUT_FILENAME;
my $out_sx = OUT_SUFXSTOR;
my $valmin = VAL_MIN;
my $valmax = VAL_MAX;
print <<USAGE;
This program does this and that with the $out_dir. The filename is
$out_fn and the file suffix is $out_sx.
Fields are separated with the $out_fs character. Enter a value
between $valmin and $valmax.
USAGE
Searched for donuts and crumpit. Found content instead.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
|
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
|
|