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Enum member `std.traits.isRvalueAssignable`

Returns true iff an rvalue of type Rhs can be assigned to a variable of type Lhs.


						
				enum isRvalueAssignable(Lhs, Rhs)
				 = __traits(compiles, ()
{
lvalueOf!Lhs = rvalueOf!Rhs;
}
);

Example

struct S1
{
    void opAssign(S1);
}

struct S2
{
    void opAssign(ref S2);
}

static assert( isRvalueAssignable!(long, int));
static assert(!isRvalueAssignable!(int, long));
static assert( isRvalueAssignable!S1);
static assert(!isRvalueAssignable!S2);
}

/**
Returns `true` iff an lvalue of type `Rhs` can be assigned to a variable of
type `Lhs`.
*/
enum isLvalueAssignable(Lhs, Rhs = Lhs) = __traits(compiles, { lvalueOf!Lhs = lvalueOf!Rhs;

Authors

Walter Bright, Tomasz Stachowiak (isExpressions), Andrei Alexandrescu, Shin Fujishiro, Robert Clipsham, David Nadlinger, Kenji Hara, Shoichi Kato

License

Boost License 1.0.