back
fn
inout(T) back(T)(return scope inout(T)[] a) if (!isAutodecodableString!(T[]) && !is(T[] == void[])) @property ref @safe pure nothrow @nogcImplements the range interface primitive back for built-in arrays. Due to the fact that nonmember functions can be called with the first argument using the dot notation, array.back is equivalent to back(array). For narrow strings, back automatically returns the last code point as _a dchar.
fn
dchar back(T)(scope const(T)[] a) if (isAutodecodableString!(T[])) @property @safe pureditto