32 lines
762 B
JavaScript
32 lines
762 B
JavaScript
|
var baseSortedIndex = require('./_baseSortedIndex'),
|
||
|
|
eq = require('./eq');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This method is like `_.indexOf` except that it performs a binary
|
||
|
|
* search on a sorted `array`.
|
||
|
|
*
|
||
|
|
* @static
|
||
|
|
* @memberOf _
|
||
|
|
* @since 4.0.0
|
||
|
|
* @category Array
|
||
|
|
* @param {Array} array The array to inspect.
|
||
|
|
* @param {*} value The value to search for.
|
||
|
|
* @returns {number} Returns the index of the matched value, else `-1`.
|
||
|
|
* @example
|
||
|
|
*
|
||
|
|
* _.sortedIndexOf([4, 5, 5, 5, 6], 5);
|
||
|
|
* // => 1
|
||
|
|
*/
|
||
|
|
function sortedIndexOf(array, value) {
|
||
|
|
var length = array == null ? 0 : array.length;
|
||
|
|
if (length) {
|
||
|
|
var index = baseSortedIndex(array, value);
|
||
|
|
if (index < length && eq(array[index], value)) {
|
||
|
|
return index;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = sortedIndexOf;
|