62 lines
3.2 KiB
Go
62 lines
3.2 KiB
Go
// Copyright (c) 2015, Emir Pasic. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package containers
|
|
|
|
// EnumerableWithIndex provides functions for ordered containers whose values can be fetched by an index.
|
|
type EnumerableWithIndex interface {
|
|
// Each calls the given function once for each element, passing that element's index and value.
|
|
Each(func(index int, value interface{}))
|
|
|
|
// Map invokes the given function once for each element and returns a
|
|
// container containing the values returned by the given function.
|
|
// TODO would appreciate help on how to enforce this in containers (don't want to type assert when chaining)
|
|
// Map(func(index int, value interface{}) interface{}) Container
|
|
|
|
// Select returns a new container containing all elements for which the given function returns a true value.
|
|
// TODO need help on how to enforce this in containers (don't want to type assert when chaining)
|
|
// Select(func(index int, value interface{}) bool) Container
|
|
|
|
// Any passes each element of the container to the given function and
|
|
// returns true if the function ever returns true for any element.
|
|
Any(func(index int, value interface{}) bool) bool
|
|
|
|
// All passes each element of the container to the given function and
|
|
// returns true if the function returns true for all elements.
|
|
All(func(index int, value interface{}) bool) bool
|
|
|
|
// Find passes each element of the container to the given function and returns
|
|
// the first (index,value) for which the function is true or -1,nil otherwise
|
|
// if no element matches the criteria.
|
|
Find(func(index int, value interface{}) bool) (int, interface{})
|
|
}
|
|
|
|
// EnumerableWithKey provides functions for ordered containers whose values whose elements are key/value pairs.
|
|
type EnumerableWithKey interface {
|
|
// Each calls the given function once for each element, passing that element's key and value.
|
|
Each(func(key interface{}, value interface{}))
|
|
|
|
// Map invokes the given function once for each element and returns a container
|
|
// containing the values returned by the given function as key/value pairs.
|
|
// TODO need help on how to enforce this in containers (don't want to type assert when chaining)
|
|
// Map(func(key interface{}, value interface{}) (interface{}, interface{})) Container
|
|
|
|
// Select returns a new container containing all elements for which the given function returns a true value.
|
|
// TODO need help on how to enforce this in containers (don't want to type assert when chaining)
|
|
// Select(func(key interface{}, value interface{}) bool) Container
|
|
|
|
// Any passes each element of the container to the given function and
|
|
// returns true if the function ever returns true for any element.
|
|
Any(func(key interface{}, value interface{}) bool) bool
|
|
|
|
// All passes each element of the container to the given function and
|
|
// returns true if the function returns true for all elements.
|
|
All(func(key interface{}, value interface{}) bool) bool
|
|
|
|
// Find passes each element of the container to the given function and returns
|
|
// the first (key,value) for which the function is true or nil,nil otherwise if no element
|
|
// matches the criteria.
|
|
Find(func(key interface{}, value interface{}) bool) (interface{}, interface{})
|
|
}
|