Lodash flatMapDepth method
语法:
_.flatMapDepth(collection, [iteratee=_.identity], [depth=1])
This method is like _.flatMap except that it recursively flattens the mapped results up to depth times.
参数:
collection (Array|Object) − The collection to iterate over.
[iteratee=_.identity] (Function) − The function invoked per iteration.
[depth=1] (number) − The maximum recursion depth.
输出:
(Array) − Returns the new flattened array.
例子:
var _ = require('lodash');
var list = [1 , 2, 3, 4, 5];
var result = _.flatMapDepth(list, function(n) {
return [[[n, n]]];
},2);
console.log(result);
Save the above program in
tester.js. Run the following command to execute this program.
命令:
输出:
[ [ 1, 1 ], [ 2, 2 ], [ 3, 3 ], [ 4, 4 ], [ 5, 5 ] ]