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![alt text](https://avatars1.githubusercontent.com/u/64487547?s=30 \"tsdotnet\") tsdotnet / array-utility\n\n[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg?style=flat-square)](https://github.com/tsdotnet/array-utility/blob/master/LICENSE)\n![npm-publish](https://github.com/tsdotnet/array-utility/workflows/npm-publish/badge.svg)\n[![npm version](https://img.shields.io/npm/v/@tsdotnet/array-utility.svg?style=flat-square)](https://www.npmjs.com/package/@tsdotnet/array-utility)\n\nA small collection of useful array functions.\n\n## Docs\n\n[tsdotnet.github.io/array-utility](https://tsdotnet.github.io/array-utility/)\n\n## Usage\n```typescript\nimport * as arrayUtil from '@tsdotnet/array-utility'\n```\n\n## Exported\n\n### indexOf\n\n```typescript\n/**\n * Checks to see where the provided array contains an item/value.\n * If the array value is null, then -1 is returned.\n * @param array\n * @param item\n * @param {function?} equalityComparer\n * @returns {number}\n */\nexport function indexOf\u003cT\u003e (\n  array: ArrayLike\u003cT\u003e,\n  item: T,\n  equalityComparer: EqualityComparison\u003cT\u003e = areEqual\n): number\n```\n\n### contains\n\n```typescript\n/**\n * Checks to see if the provided array contains an item.\n * If the array value is null, then false is returned.\n * @param array\n * @param item\n * @param {function?} equalityComparer\n * @returns {boolean}\n */\nexport function contains\u003cT\u003e (\n  array: ArrayLike\u003cT\u003e,\n  item: T,\n  equalityComparer: EqualityComparison\u003cT\u003e = areEqual\n): boolean\n```\n\n### replace\n\n```typescript\n/**\n * Finds and replaces a value from an array.  Will replaces all instances unless a maximum is specified.\n * @param array\n * @param old\n * @param newValue\n * @param max\n * @returns {number}\n */\nexport function replace\u003cT\u003e (\n  array: ArrayLikeWritable\u003cT\u003e,\n  old: T,\n  newValue: T,\n  max: number = Infinity\n): number\n```\n\n### updateRange\n\n```typescript\n/**\n * Replaces values of an array across a range of indexes.\n * @param array\n * @param value\n * @param start\n * @param stop\n */\nexport function updateRange\u003cT\u003e (\n  array: ArrayLike\u003cT\u003e,\n  value: T,\n  start: number = 0,\n  stop?: number\n): void\n\n```\n\n### clearEach\n\n```typescript\n/**\n * Clears (sets to null) values of an array across a range of indexes.\n * @param array\n * @param start\n * @param stop\n */\nexport function clearEach (\n  array: ArrayLikeWritable\u003cany\u003e,\n  start: number = 0,\n  stop?: number\n): void\n```\n\n### register\n\n```typescript\n/**\n * Ensures a value exists within an array.  If not found, adds to the end.\n * @param array\n * @param item\n * @param {function?} equalityComparer\n * @returns {boolean}\n */\nexport function register\u003cT\u003e (\n  array: ArrayLikeWritable\u003cT\u003e,\n  item: T,\n  equalityComparer: EqualityComparison\u003cT\u003e = areEqual\n): boolean\n```\n\n### findIndex\n\n```typescript\n/**\n * Returns the first index of which the provided predicate returns true.\n * Returns -1 if always false.\n * @param array\n * @param predicate\n * @returns {number}\n */\nexport function findIndex\u003cT\u003e (\n  array: ArrayLike\u003cT\u003e,\n  predicate: PredicateWithIndex\u003cT\u003e\n): number\n```\n\n### forEach\n\n```typescript\n/**\n * Allows for using \"false\" to cause forEach to break.\n * Can also be applied to a structure that indexes like an array, but may not be.\n * @param source\n * @param action\n */\nexport function forEach\u003cT\u003e (\n  source: ArrayLike\u003cT\u003e,\n  action: ActionWithIndex\u003cT\u003e | PredicateWithIndex\u003cT\u003e\n): void\n```\n\n### applyTo\n\n```typescript\n/**\n * Is similar to Array.map() but instead of returning a new array, it updates the existing indexes.\n * Can also be applied to a structure that indexes like an array, but may not be.\n * @param target\n * @param fn\n */\nexport function applyTo\u003cT\u003e (\n  target: ArrayLikeWritable\u003cT\u003e,\n  fn: SelectorWithIndex\u003cT, T\u003e\n): void\n```\n\n### removeIndex\n\n```typescript\n/**\n * Removes an entry at a specified index.\n * @param array\n * @param index\n * @returns {boolean} True if the value was able to be removed.\n */\nexport function removeIndex\u003cT\u003e (\n  array: T[],\n  index: number\n): boolean\n```\n\n### remove\n\n```typescript\n/**\n * Finds and removes a value from an array.  Will remove all instances unless a maximum is specified.\n * @param array\n * @param value\n * @param max\n * @param {function?} equalityComparer\n * @returns {number} The number of times the value was found and removed.\n */\nexport function remove\u003cT\u003e (\n  array: T[],\n  value: T,\n  max: number                             = Infinity,\n  equalityComparer: EqualityComparison\u003cT\u003e = areEqual\n): number\n```\n\n### repeat\n\n```typescript\n/**\n * Simply repeats a value the number of times specified.\n * @param element\n * @param count\n * @returns {T[]}\n */\nexport function repeat\u003cT\u003e (\n  element: T,\n  count: number\n): T[]\n```\n\n### range\n\n```typescript\n/**\n * Returns a range of numbers based upon the first value and the step value.\n * @param first\n * @param count\n * @param step\n * @returns {number[]}\n */\nexport function range (\n  first: number,\n  count: number,\n  step: number = 1\n): number[]\n```\n\n### rangeUntil\n\n```typescript\n/**\n * Returns a range of numbers based upon the first value and the step value excluding any numbers at or beyond the until value.\n * @param first\n * @param until\n * @param step\n * @returns {number[]}\n */\nexport function rangeUntil (\n  first: number,\n  until: number,\n  step: number = 1\n): number[]\n```\n\n### distinct\n\n```typescript\n/**\n * Returns a unique reduced set of values.\n * @param source\n */\nexport function distinct (source: string[] | null): string[];\nexport function distinct (source: number[] | null): number[];\n```\n\n### flatten\n\n```typescript\n/**\n * Takes any arrays within an array and inserts the values contained within in place of that array.\n * For every count higher than 0 in recurseDepth it will attempt an additional pass.  Passing Infinity will flatten all arrays contained.\n * @param a\n * @param recurseDepth\n * @returns {any[]}\n */\nexport function flatten (\n  a: any[],\n  recurseDepth: number = 0\n): any[]\n```\n\n### init\n\nhttps://github.com/tsdotnet/array-init\n\n`arrayInit as init`\n\n### copy, copyTo\n\nhttps://github.com/tsdotnet/array-copy\n\n`arrayCopy as copy`\n`arrayCopyTo as copyTo`\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ftsdotnet%2Farray-utility","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Ftsdotnet%2Farray-utility","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ftsdotnet%2Farray-utility/lists"}