Trait former::exposed::protected::ValToEntry

pub trait ValToEntry<Collection> {
    type Entry;

    // Required method
    fn val_to_entry(self) -> Self::Entry;
}

Facilitates the conversion of values back into entries for specific collection types.

This trait wraps the functionality of CollectionValToEntry, providing a more ergonomic interface for converting values directly within the type they pertain to. It is useful in maintaining the integrity of collection operations, especially when dealing with sophisticated structures that separate the concept of values and entries, such as HashMaps and other associative collections.

Required Associated Types

type Entry

Represents the type of entry that corresponds to the value within the collection.

Required Methods

fn val_to_entry(self) -> Self::Entry

Transforms the instance (value) into an entry compatible with the specified collection. This conversion is essential for operations like insertion or modification within the collection, where the value needs to be formatted as an entry.

Returns

Returns the entry constructed from the instance of the value, ready for integration into the collection.

Example

use former_types::ValToEntry; // use crate `former` instead of crate `former_types` unless you need to use crate `former_types` directly

struct PairMap;

impl ValToEntry< PairMap > for (i32, i32)
{
  type Entry = ( String, i32 );

  fn val_to_entry( self ) -> Self::Entry
  {
    (self.0.to_string(), self.1)
  }
}

Implementors

impl<C, Val> ValToEntry<C> for Val

where C: CollectionValToEntry<Val>,

type Entry = <C as CollectionValToEntry<Val>>::Entry