February 2013
Intermediate to advanced
538 pages
20h 55m
English
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Name
trait_exists
Synopsis
bool trait_exists(stringname[, boolautoload])
Returns true if a trait with
the same name as the string has been defined; if not, it returns
false. The comparison for trait
names is case-insensitive. If autoload is set and is true, the autoloader attempts to load the
trait before checking its existence.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.