Created
January 7, 2017 20:34
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JS mimics array object
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| class List { | |
| constructor(...args) { | |
| this.store = [...args]; | |
| this.length = this.store.length; | |
| this.createIndex(); | |
| } | |
| createIndex() { | |
| for (let i in this.store) { | |
| this[i] = this.store[i]; | |
| } | |
| } | |
| push = (...el) => { | |
| this.store.push(...el); | |
| this.length = this.store.length; | |
| this.createIndex(); | |
| return this.length; | |
| } | |
| pop = () => { | |
| const el = this.store.pop(); | |
| this.length = this.store.length; | |
| this[this.length] = undefined; | |
| return el; | |
| } | |
| shift = () => { | |
| const el = this.store.shift(); | |
| this.length = this.store.length; | |
| this[this.length] = undefined; | |
| this.createIndex(); | |
| return el; | |
| } | |
| unshift = (...el) => { | |
| this.store.unshift(...el); | |
| this.length = this.store.length; | |
| this.createIndex(); | |
| return this.length; | |
| } | |
| filter = (func) => { | |
| return this.store.filter(func); | |
| } | |
| } |
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