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Template std.traits.FieldNameTuple
Get as an expression tuple the names of the fields of a struct, class, or
union. This consists of the fields that take up memory space, excluding the
hidden fields like the virtual function table pointer or a context pointer
for nested types. If T isn't a struct, class, or union returns an
expression tuple with an empty string.
Arguments
template FieldNameTuple(T);
Example
struct S { int x; float y; }
static assert(FieldNameTuple!S == TypeTuple!("x", "y"));
static assert(FieldNameTuple!int == TypeTuple!"");
Authors
Walter Bright,
Tomasz Stachowiak (isExpressions