Re: select RBITS,WBITS,EBITS,TIMEOUT. The meaning of all the *BITS

in reply to select RBITS,WBITS,EBITS,TIMEOUT. The meaning of all the *BITS

EBITS is for error filehandles. The select builtin is a thin layer over the underlying select(2) system call so familiarity with that can help (see your OS' manual pages or a tome like e.g. Stevens, Advanced Programming in the UNIX Environment).

Unless you've got a burning desire to program that close to the metal as it were you may be better served using IO::Select (or stepping even further back and using an event loop like Mojo::IOLoop, AnyEvent, or POE).

Edit: And I just bothered to pull my copy off the shelf and skim and I'm a bit vague still. That's filehandles which you want to know if/when they have errors or exception conditions present.

The cake is a lie.
The cake is a lie.
The cake is a lie.

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Re^2: select RBITS,WBITS,EBITS,TIMEOUT. The meaning of all the *BITS by Anonymous Monk on Oct 23, 2020 at 02:46 UTC
yeah man select https://perldoc.perl.org/functions/select#select-RBITS,WBITS,EBITS,TIMEOUT even links http://man.he.net/man2/select select links https://en.m.wikipedia.org/wiki/Select_(Unix) links https://pubs.opengroup.org/onlinepubs/9699919799/functions/select.html	[reply]
Re^2: select RBITS,WBITS,EBITS,TIMEOUT. The meaning of all the *BITS by ikegami (Patriarch) on Oct 25, 2020 at 11:16 UTC
EBITS is for error filehandles. No. What does that even mean? It's used to specify the handles to monitor for exceptional conditions. See my answer for details.	[reply]

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