intarrayLength = [array1count]; //访问数组中特定位置的一个对象 NSString*string = [array1objectAtIndex:0]; //是否包含指定对象 BOOLisInArray = [array1containsObject:string1]; //对象在数组中的位置 intindex = [array1indexOfObject:string1]; //遍历一个数组中的值 for(NSString*objinarray1)...
NSLog(@"未排序:\n%@",_mutiArray); NSLog(@"根据name排序:\n%@",[_mutiArray sortedArrayUsingDescriptors:[NSArray arrayWithObjects:_sorter, nil]]); NSLog(@"根据work排序:\n%@",[_mutiArray sortedArrayUsingDescriptors:[NSArray arrayWithObjects:_sorter2, nil]]); [_mutiArray release]; [_sorte...
X = createArray(1,5,"SimpleValue") X = 1×5 SimpleValue array with properties: prop1 The value ofprop1in all elements of the array is the default value defined by the class. [X.prop1] ans = 0 0 0 0 0 LikeArgument Use theLikename-value argument to create an object array with ...
For each own property key P of O such that P is an array index, in ascending numeric index order, do a. Add P as the last element of keys. For each own property key P of O such that Type(P) is String and P is not an array index, in ascending chronological order of property c...
1.for...in循环 基础概念:for...in循环用于遍历对象的可枚举属性。 优势:简单直观,适用于大多数基本对象的遍历。 应用场景:当你需要遍历对象的所有自有属性(不包括继承的属性)时。 示例代码: 代码语言:txt 复制 const obj = { a: 1, b: 2, c: 3 }; ...
Object initializers can set indexers, in addition to assigning fields and properties. Consider this basicMatrixclass: C# publicclassMatrix{privatedouble[,] storage =newdouble[3,3];publicdoublethis[introw,intcolumn] {// The embedded array will throw out of range exceptions as appropriate...
For example, if you use an array to store nodes in a binary tree, one way to implement it is to refer to a node's right and left node by the actual nodes:複製 class Node { Data d; Node left; Node right; }; Node[] binary_tr = new Node [num_nodes]; ...
14、QList<QByteArray> dynamicPropertyNames() (实用) 获取所有动态属性名。 15、bool event(QEvent *e) 事件处理,一般由子类重写。 16、bool eventFilter(QObject *watched, QEvent *event) void installEventFilter(QObject *filterObj) void removeEventFilter(QObject *obj) ...
Returns an iterator of theStringnames in this object. Length() Returns the number of name/value mappings in this object. Names() Returns an array containing the string names in this object. Notify() Wakes up a single thread that is waiting on this object's monitor. ...
String.Join Method (String, array<Object[]) Microsoft Silverlight will reach end of support after October 2021.Learn more. Concatenates the elements of an object array, using the specified separator between each element. Namespace:System Assembly:mscorlib (in mscorlib.dll) ...