Short answer: a typeglob is a symbol table entry; if you have (non-lexical) $foo, %foo, @foo, &foo, and format foo, they are all contained in the same typeglob *foo (along with a file/dir handle). Because filehandles have no specific sigil, you can only mention them in perl by way of the glob.
So there are two cases where you'd use a typeglob: as a filehandle, or to muck about with the symbol table.
The most common case of the former is to use one of the
perl provided filehandles *STDIN, *STDOUT, *STDERR, *DATA. (The * is unneeded if passing to a function or builtin having a * in the prototype.) For non-perl provided filehandles, using the newer lexical filehandles (actually just a reference to a typeglob, stored in a regular scalar variable) obviates the need for a typeglob.
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:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- 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
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||