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Mojo trait

IntableRaising

The IntableRaising trait describes a type can be converted to an Int, but the conversion might raise an error.

Any type that conforms to Intable or IntableRaising works with the built-in int() function.

This trait requires the type to implement the __int__() method, which can raise an error. For example:

@value
struct Foo(IntableRaising):
    var i: Int

    fn __int__(self) raises -> Int:
        return self.i
@value
struct Foo(IntableRaising):
    var i: Int

    fn __int__(self) raises -> Int:
        return self.i

Now you can use the int() function to convert a Foo to an Int:

foo = Foo(42)
assert_equal(int(foo), 42)
foo = Foo(42)
assert_equal(int(foo), 42)

Implemented traits​

AnyType, UnknownDestructibility

Methods​

__int__​

__int__(self: _Self) -> Int

Get the integral representation of the value.

Returns:

The integral representation of the type.

Raises:

If the type does not have an integral representation.