Ángel Ortega


ex-writer, ex-programmer, ex-musician, ex-illustrator
ex-escritor, ex-programador, ex-músico, ex-dibujante
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Ángel Ortega »

If you program in C, you've probably used what is called the ternary operator a million times in expressions like this:

    value = user_value ? user_value : default_value;
Where you test user_value and, if it's non-zero, you store it in value; otherwise, you set value to default_value.

What you may not know is that, thanks to a gcc (and others) extension, you can abridge that expression to this:

    value = user_value ?: default_value;
This ?: thing is colloquially named the 'Elvis' operator (if you don't see why, just look at it with you head slightly slanted to the left).