hasMember

Returns true if a member can be found on aggregate filtered with the given predicate, false otherwise.

auto hasMember()
auto hasMember()
@safe pure nothrow
auto
hasMember
(
alias aggregate
alias predicate
)
()
if (
(
isAggregate!aggregate ||
isModule!aggregate
) &&
is(typeof(unaryFun!predicate))
)

Examples

struct S {
    long id;
    int age;
    string name() {
        return "name";
    }
}

hasMember!(S, member => is(member.type == long)); // returns true
hasMember!(S, member => is(member.type == string)); // returns true
hasMember!(S, member => member.name == "doesNotExist"); // returns false

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