Expand description
Method-Directed Type Conversion
The std::convert module provides traits for converting values from one type to
another. The first of these, From<T>, provides an associated function
from(orig: T) -> Self. This function can only be called in prefix-position,
as it does not have a self receiver. The second, Into<T>, provides a
method into(self) -> T which can be called in suffix-position; due to
intractable problems in the type solver, this method cannot have any further
method calls attached to it. It must be bound directly into a let or function
call.
The TryFrom<T> and TryInto<T> traits have the same properties, but
permit failure.
This module provides traits that place the conversion type parameter in the
method, rather than in the trait, so that users can write .conv::<T>() to
convert the preceding expression into T, without causing any failures in the
type solver. These traits are blanket-implemented on all types that have an
Into<T> implementation, which covers both the blanket implementation of Into
for types with From, and manual implementations of Into.
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