Array.isArray(obj) Parameters ParameterDescription objRequired. An object (or any data type) to be tested. Return Value TypeDescription A booleantrueif the object is an array, otherwisefalse. Array Tutorials: Array Tutorial Array Const Basic Array Methods ...
DejalFoundationCategories is a collection of Foundation-level categories, to add useful methods to classes like NSArray, NSDictionary, NSString, and others. They work on both OS X and iOS. - Dejal/DejalFoundationCategories
BitArray CaseInsensitiveComparer CaseInsensitiveHashCodeProvider CollectionBase Comparer DictionaryBase DictionaryEntry Hashtable ICollection IComparer IDictionary IDictionaryEnumerator IEnumerable IEnumerator IEqualityComparer IHashCodeProvider IList IStructuralComparable IStructuralEquatable Queue ReadOnlyCollectionBase SortedLi...
1-letter supporting package so we only need to write a short common function, such as:I.ToS(1234)to convertint64tostring) A- Array B- Boolean C- Character (or Rune) D- Database F- Floating Point L- Logging M- Map I- Integer
Array 与 Dictionary 都遵守了 Collection 协议,那么这个 isEmpyt 属性会不会就存在于 Collection 协议中呢? 带着这个疑问,我们去看看 Collection 协议就知道了: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 extension Collection { /// A Boolean value indicating whether the collection is empty. ///...
BitArray CaseInsensitiveComparer CaseInsensitiveHashCodeProvider CollectionBase 比较器 DictionaryBase DictionaryEntry Hashtable ICollection IComparer IDictionary IDictionaryEnumerator IEnumerable IEnumerator IEqualityComparer IHashCodeProvider IList IStructuralComparable ...
BitArray CaseInsensitiveComparer CaseInsensitiveHashCodeProvider CollectionBase 比較子 DictionaryBase DictionaryEntry 雜湊表 ICollection IComparer IDictionary IDictionaryEnumerator IEnumerable IEnumerator IEqualityComparer IHashCodeProvider IList IStructuralComparable ...
Arrayimplements theIsSynchronizedproperty because it is required by theSystem.Collections.ICollectioninterface. .NET classes based onArrayprovide their own synchronized version of the collection using theSyncRootproperty. Classes that use arrays can also implement their own synchronization using theSyncRootpr...
A disk array enables storage capacity to scale and be managed far more efficiently than capacity from a collection of servers. Arrays have complicated redundancy features built into them, such as high-performance redundant array of independent disks (RAID) controllers, and the storage may be configu...
returnArrayUtil.isArray(obj) ? ArrayUtil.isEmpty(obj) :false;// 数组 } } 测试: publicclassTest01{ publicstaticvoidmain(String[] args){ // 定义一个集合null; List<String> a =null; System.out.println("定义一个集合null:"+ ObjectUtil.isEmpty(a)); ...