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on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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[6a3a178] | 1 | var arrayMap = require('./_arrayMap'),
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| 2 | baseIteratee = require('./_baseIteratee'),
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| 3 | basePickBy = require('./_basePickBy'),
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| 4 | getAllKeysIn = require('./_getAllKeysIn');
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| 5 |
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| 6 | /**
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| 7 | * Creates an object composed of the `object` properties `predicate` returns
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| 8 | * truthy for. The predicate is invoked with two arguments: (value, key).
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| 9 | *
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| 10 | * @static
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| 11 | * @memberOf _
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| 12 | * @since 4.0.0
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| 13 | * @category Object
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| 14 | * @param {Object} object The source object.
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| 15 | * @param {Function} [predicate=_.identity] The function invoked per property.
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| 16 | * @returns {Object} Returns the new object.
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| 17 | * @example
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| 18 | *
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| 19 | * var object = { 'a': 1, 'b': '2', 'c': 3 };
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| 20 | *
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| 21 | * _.pickBy(object, _.isNumber);
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| 22 | * // => { 'a': 1, 'c': 3 }
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| 23 | */
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| 24 | function pickBy(object, predicate) {
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| 25 | if (object == null) {
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| 26 | return {};
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| 27 | }
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| 28 | var props = arrayMap(getAllKeysIn(object), function(prop) {
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| 29 | return [prop];
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| 30 | });
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| 31 | predicate = baseIteratee(predicate);
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| 32 | return basePickBy(object, props, function(value, path) {
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| 33 | return predicate(value, path[0]);
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| 34 | });
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| 35 | }
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| 36 |
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| 37 | module.exports = pickBy;
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