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What does a type followed by _t (underscore-t) represent?
While typing in my IDE (Xcode), autocomplete pops up already-defined words when I'm partway thru entering some variable name. I occasionally see names that have '_t' at the end of them.
What naming convention is that and what does it mean?
Is there a reference document to look up pre- and post-fixes in common use?
Searching with the term "postfix" gives me a lot of GoogleNoise about the mail server of the same name.
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The _t implies a typedef, a defined data type. The typedef is based on an existing type. Here are the basic C language data types: char. int.
_t usually means type, and sometimes typedef.
The name size_t essentially means "size type", and you will typically see this data type used to specify the size or length of things - like the length of a C string returned by the strlen() function, for example. This is not one of the "built-in" data types of C/C++.
The t stands for "type" or "typedef." You'll see a lot of POSIX headers (and others) with time_t, size_t, and others. These which hold (not necessarily defined) specific bit-sizes based on the operating system and machine architecture.
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based only on my own experience, the "_t" postfix means "data type". In other words, it's a datatype defined used typedef.
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