Optional.opEquals

Compare two optionals or an optional with some value

bool opEquals(None )
bool opEquals(Optional!U rhs)
bool opEquals(U rhs)
bool opEquals(R other)
struct Optional(T)
const
bool
opEquals
(
R
)
(
auto ref R other
)
if (
from.std.range.isInputRange!R
)

Return Value

Type: bool

- If the two are optionals then they are both unwrapped and compared. If either are empty this returns false. And if compared with none and there's a value, also returns false

auto a = some(3);
a == some(2); // false
a == some(3); // true
a == none; // false

Optional.opEquals

Return Value

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