Throw

Hook implementation that throws exceptions instead of default assert behavior.

version(D_Exceptions)

struct Throw {

static immutable

bool enableDefaultConstructor;

static void onAccessEmptyValue(E err);

static void onAccessEmptyError();

}

Members

Static functions

onAccessEmptyError void onAccessEmptyError(): Handler for case when empty error is accessed.
onAccessEmptyValue void onAccessEmptyValue(E err): Handler for case when empty value is accessed.

Static variables

enableDefaultConstructor bool enableDefaultConstructor;: Default constructor for Expected is disabled. Same with the opAssign, so Expected can be only constructed once and not modified afterwards.

Examples

static assert(!isDefaultConstructorEnabled!Throw);
static assert(hasOnAccessEmptyValue!(Throw, string));
static assert(hasOnAccessEmptyValue!(Throw, int));
static assert(hasOnAccessEmptyError!Throw);

assertThrown!(Unexpected!string)(ok!(string, Throw)(42).error);
assertThrown!(Unexpected!string)(err!(int, Throw)("foo").value);
assertThrown!(Unexpected!int)(err!(bool, Throw)(-1).value);

Throw

Members

Static functions

Static variables

Examples

Meta

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