* Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors*//** Used as the size to enable large array optimizations.*/varLARGE_ARRAY_SIZE = 200;/** Used as the `TypeError` message for "Functions" methods.*/varFUNC_ERROR_TEXT = 'Expected a function';/** Used to st...
Say you want to add objectentryto an array of objectsnumbers, only ifentrydoes not exist already. 假设您想要将对象条目添加到对象数组中,只有在条目不存在的情况下才会添加。 let numbers = [ { to: 1, from: 2 }, { to: 3, from: 4 }, { to: 5, from: 6 }, { to: 7, from: 8 }...
log(_.exists(obj, '[1].a[1]')); // true Try it yourself ››› pathToString › convert an array to string path (opposite to _.toPath) 📚 see docs expand example console.log(_.pathToString(['a', 'b', 'c', 'defg', 0, '1', 2.3] ,'prefix1', 'prefix2', '[...
Note that (1) This will return the first element of the array for any argument not in the array and (2) due to the behavior of _.curry the created function will return a function equivalent to itself if called with no argument.
array (Array): The array to search. [callback=identity] (Function|Object|string): The function called per iteration. If a property name or object is provided it will be used to create a ".pluck" or ".where" style callback, respectively. [thisArg] (*): The this binding of callback....
(Array.from(activeDownloads.current), queue) .forEach((id) =>activeDownloads.current.delete(id)); }, [queued, dispatch, activeDownloads]); useEffect(()=>{// GUARD: We only run this functino onceif(hasRehydratedOrphans) {return; }// GUARD: If the state has not been rehydrated, ...
Made LARGE_ARRAY_SIZE check in stackSet align with othersOptimized adding values to stacks by not inspecting all key-value pairsOptimized “isType” methods to use faster Node.js C++ helpers when availableOptimized _.endsWith, _.negate, & _.startsWith ...
Use it to add your own utility functions or third-party mixins like underscore-contrib or lodash-id. db._.mixin({ second: function(array) { return array[1] } }) db.get('posts') .second() .value() db.getState() Returns database state. db.getState() // { posts: [ ... ] }...
(value) Arguments Returns Example _.toArray(value) Arguments Returns Example _.toPlainObject(value) Arguments Returns Example “Number” Methods _.random([min=0], [max=1], [floating]) Arguments Returns Example “Object” Methods _.assign(object, [sources], [customizer], [thisArg]) Arguments...
passing zero or negative values to $omit/$offset yields the full set. Note that when omitting, the selected number of elements ($omit/$offset) is still iterated over but not yielded. Similar to array_slice, preserving the keys. Note: Unlike array_slice, the keys are always preserved. Use...