User:WebDrake/Template parameter standard names

This table is an attempt to create a standardized list of recommended template parameter names for use in D. Names are chosen to try and provide an optimal balance between ease of typing and ease of later understanding.

Use numerical labels for multiple similar parameters, e.g. T1, T2, ... Range1, Range2, ... etc., or alternatively annotations that give info about their purpose: e.g. SourceRange, TargetRange.

Parameter	Name	Notes
Arbitrary type	T	As typical for C++. Note Value has also been used in Phobos.
Arguments	args	Seems to be typical, but why not Args?
Array	A	e.g. foo(A : T[], T)(A arr)
Character type	C	Could also use Char ... ?
Element of a range	E	e.g. foo(Range, E)(Range r, E e) — perhaps use Element instead? Or just T?
Function alias	fun
Predicate alias	pred
Range	Range	Use R internally as an alias: e.g. alias Unqual!Range R. Can be annotated if specific range constraints are needed, e.g. ForwardRange, BidirectionalRange, but this is not obligatory.
Separator	Separator	as in e.g. std.algorithm.splitter, joiner
String type	String
Uniform random number generator	UniformRNG	Could also use RandGen, but less specific.