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Mojo trait

Intable

The Intable trait describes a type that can be converted to an Int.

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. For example:

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

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

    fn __int__(self) -> 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)

Note: If the __int__() method can raise an error, use the IntableRaising trait instead.

Implemented traits​

AnyType, CollectionElement, Copyable, Movable

Methods​

__copyinit__​

__copyinit__(out self: T, existing: T, /)

Create a new instance of the value by copying an existing one.

Args:

  • ​existing (T): The value to copy.

__moveinit__​

__moveinit__(out self: T, owned existing: T, /)

Create a new instance of the value by moving the value of another.

Args:

  • ​existing (T): The value to move.

__int__​

__int__(self: T) -> Int

Get the integral representation of the value.

Returns:

The integral representation of the value.