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Document element type parameter for isForwardRange

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Paul Backus 2024-01-20 10:22:42 -05:00
parent c6e1f98fab
commit 68c412316b
1 changed files with 9 additions and 0 deletions
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9
std/range/primitives.d
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@ -1011,6 +1011,15 @@ have a `save` function.
See_Also: See_Also:
The header of $(MREF std,range) for tutorials on ranges. The header of $(MREF std,range) for tutorials on ranges.
Params:
R = type to be tested
E = if present, the elements of the range must be
$(DDSUBLINK spec/const3, implicit_qualifier_conversions, qualifier-convertible)
to this type
Returns:
`true` if R is a forward range (possibly with element type `E`), `false` if not
*/ */
enum bool isForwardRange(R) = isInputRange!R enum bool isForwardRange(R) = isInputRange!R
&& is(typeof((R r) { return r.save; } (R.init)) == R); && is(typeof((R r) { return r.save; } (R.init)) == R);