Module ringo/utils/objects
Adds utility functions for working with JavaScript Objects
clone (object, cloned, recursive)
Copies the properties of an object into a target object.
Example
let objects = require("ringo/utils/objects");
let a = [1, 2, 3];
let b = {"a": a};
let c = {};
// shallow clone: b.a and c.a will share the same array
objects.clone(b, c);
// this modifies all three: a, b.a, and c.a
b.a[0] = 99;
console.dir(a); // --> [ 99, 2, 3 ]
console.dir(b); // --> { a: [ 99, 2, 3 ] }
console.dir(c); // --> { a: [ 99, 2, 3 ] }
// reset to original values
a = [1, 2, 3];
b = {"a": a};
c = {};
// c is now a deep clone of b
objects.clone(b, c, true);
// this modifies only a and b.a
b.a[0] = 99;
console.dir(a); // --> [ 99, 2, 3 ]
console.dir(b); // --> { a: [ 99, 2, 3 ] }
// c.a stays untouched, holds the original values
console.dir(c); // --> { a: [ 1, 2, 3 ] }Parameters
| Object | object | the object to clone |
| Object | cloned | optional clone object |
| Boolean | recursive | pass true to create a deep clone. Otherwise a shallow clone is created. |
Returns
| Object | the clone object |
merge (obj...)
Creates a new object as the as the keywise union of the provided objects. Whenever a key exists in a later object that already existed in an earlier object, the according value of the earlier object takes precedence.
Example
const a = { "k1": "val-A" };
const b = { "k1": "val-B", "k2": "val-B" };
const c = { "k1": "val-C", "k2": "val-C" };
// result: { k1: 'val-A', k2: 'val-B' }
const result = objects.merge(a, b, c);Parameters
| Object... | obj... | The objects to merge |