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can-diff

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Utilities for comparing and applying differences between data structures.

Object

can-diff exports an object that contains all of its module functions:

import {diff} from "can-diff";

// Difference between two lists
diff.list(["a","b"], ["a","c"])
//-> [{type: "splice", index: 1, deleteCount: 1, insert: ["c"]}]

// Difference between two objects
diff.map({a: "a"},{a: "A"})
//-> [{type: "set", key: "a", value: "A"}]

// Diffs an object or array "deeply"
diff.deep({inner: []}, {inner: ['a']});
//-> [{
//    key: 'inner',
//    type: "splice",
//    index: 0,
//    deleteCount: 0,
//    insert: ['a']
// }]


var ramiya = new User({id: 21, name: "Ramiya"});

var todo = new Todo({
    name: "mow lawn",
    assignedTo: [{id: 20, name: "Justin"}, ramiya]
});

// Updates `dest` with source using identity awareness
diff.mergeDeep(todo, {
    id: 1,
    name: "mow lawn",
    complete: true,
    assignedTo: [{
        id: 21, name: "Ramiya Meyer"
    }]
});

ramiya //-> User({id: 21, name: "Ramiya Meyer"})


var hobbies = new DefineList(["dancin","programmin"]);
var hobbiesObservable = value.fromValue(hobbies);

// Emits patches from changes in a source observable
var patcher = new Patcher(hobbies);

canReflect.onPatches(patcher, console.log);

CanJS is part of DoneJS. Created and maintained by the core DoneJS team and Bitovi. Currently 4.3.0.

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