4.17.11
3.10.1
2.4.2
1.3.1
_.uniqBy(array, [iteratee=_.identity])
This method is like _.uniq
except that it accepts iteratee
which is
invoked for each element in array
to generate the criterion by which
uniqueness is computed. The order of result values is determined by the
order they occur in the array. The iteratee is invoked with one argument:
(value).
Since
4.0.0
Arguments
argument
array
[iteratee=_.identity]
type
Array
Function
description
The array to inspect.
The iteratee invoked per element.
Returns
(array)
Example
_.uniqBy([2.1, 1.2, 2.3], Math.floor);
// => [2.1, 1.2]
// The `_.property` iteratee shorthand.
_.uniqBy(
[{ x: 1 }, { x: 2 }, { x: 1 }],
"x"
);
// => [{ 'x': 1 }, { 'x': 2 }]
_.uniqBy([2.1, 1.2, 2.3], Math.floor);
// => [2.1, 1.2]
// The `_.property` iteratee shorthand.
_.uniqBy([{ x: 1 }, { x: 2 }, { x: 1 }], "x");
// => [{ 'x': 1 }, { 'x': 2 }]