Creates an object composed of keys generated from the results of running each element of `collection` thru `iteratee`. The corresponding value of each key is the number of times the key was returned by `iteratee`. The iteratee is invoked with one argument: (value).
countBy([6.1, 4.2, 6.3], Math.floor)
// => { '4': 1, '6': 2 }| Name | Type | Attribute | Description |
|---|---|---|---|
| collection | The collection to iterate over. | ||
| iteratee | The iteratee to transform keys. |
{
"comment": "/**\r\n * Creates an object composed of keys generated from the results of running\r\n * each element of `collection` thru `iteratee`. The corresponding value of\r\n * each key is the number of times the key was returned by `iteratee`. The\r\n * iteratee is invoked with one argument: (value).\r\n *\r\n * @since 0.5.0\r\n * @category Collection\r\n * @param {Array|Object} collection The collection to iterate over.\r\n * @param {Function} iteratee The iteratee to transform keys.\r\n * @returns {Object} Returns the composed aggregate object.\r\n * @example\r\n *\r\n * countBy([6.1, 4.2, 6.3], Math.floor)\r\n * // => { '4': 1, '6': 2 }\r\n */",
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"filename": "countBy.js",
"lineno": 23,
"path": "C:\\Users\\beaujeup\\projects\\jsdoc-template\\examples\\lodash\\lodash-repo",
"code": {
"id": "astnode100000906",
"name": "countBy",
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"paramnames": [
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},
"vars": {
"": null
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},
"description": "Creates an object composed of keys generated from the results of running\reach element of `collection` thru `iteratee`. The corresponding value of\reach key is the number of times the key was returned by `iteratee`. The\riteratee is invoked with one argument: (value).",
"since": "0.5.0",
"tags": [
{
"originalTitle": "category",
"title": "category",
"text": "Collection",
"value": "Collection"
}
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"type": {
"names": [
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},
"description": "The collection to iterate over.",
"name": "collection"
},
{
"type": {
"names": [
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},
"description": "The iteratee to transform keys.",
"name": "iteratee"
}
],
"returns": [
{
"type": {
"names": [
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]
},
"description": "Returns the composed aggregate object."
}
],
"examples": [
"countBy([6.1, 4.2, 6.3], Math.floor)\r// => { '4': 1, '6': 2 }"
],
"name": "countBy",
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