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Enum std.traits.member hasMember
Yields true if and only if T is an aggregate that defines
a symbol called name.
Declaration
enum hasMember(T, string name) = __traits(hasMember, T, name);
Example
static assert(!hasMember!(int, "blah"));
struct S1 { int blah; }
struct S2 { int blah(){ return 0; } }
class C1 { int blah; }
class C2 { int blah(){ return 0; } }
static assert(hasMember!(S1, "blah"));
static assert(hasMember!(S2, "blah"));
static assert(hasMember!(C1, "blah"));
static assert(hasMember!(C2, "blah"));
Authors
Walter Bright,
Tomasz Stachowiak (isExpressions