在VBA中,可以使用IsArrayEmpty函数来判断一个数组是否为空。下面是一个示例代码: Sub CheckArrayIsEmpty() Dim arr() As Variant ' 初始化数组 ReDim arr(1 To 5) ' 判断数组是否为空 If IsArrayEmpty(arr) Then MsgBox "数组为空" Else MsgBox "数组不为空" End If End Sub Function IsArrayEmpty(ar...
Because an error will be thrown if we use theUboundor Lbound function on an empty array, we are going to use the “On Error Resume Next” statement and catch the error number to test if the array is empty. Here the array is considered empty if it doesn’t have a size defined. I ...
Sub CheckArray() Dim myArray() As Variant myArray = Array() ' 创建一个空数组 If IsArrayEmpty(myArray) Then MsgBox "数组为空" Else MsgBox "数组不为空" End If End Sub Function IsArrayEmpty(arr As Variant) As Boolean On Error Resume Next IsArrayEmpty = (Err.Number <> 0 Or UBound...
1. isset功能:判断变量是否被初始化说明:它并不会判断变量是否为空,并且可以用来判断数组中元素是否被定义过注意:当使用isset来判断数组元素是否被初始化过时,它的效率比array_key_exists高4倍左右2. empty功能:检测变量是否为 ios 数组判断为空 php怎样判断数组是否为空...
最后，我们使用另一个循环通过rng2.Offset(,1)使用refs填充Split()(1)。这样，每一个新的匹配将只是...
Dim MyVar, MyCheckMyCheck = IsEmpty(MyVar) ' Returns True.MyVar = Null ' Assign Null.MyCheck = IsEmpty(MyVar) ' Returns False.MyVar = Empty ' Assign Empty.MyCheck = IsEmpty(MyVar) ' Returns True.4，IsDate 函数 如果表达式是⽇期或可识别为有效⽇期或时间，则返回 True；否则，它返回 ...
语法:Erase ArrayNameErase 释放动态数组所使用的内存,下次引用该动态数组之前,必须使用 ReDim 重新声明数组变量和维数。固定数值数组,数组中的每个元素重置为零 固定字符串数组,数组中的每个元素被重置为零长度 "" 固定Variant 数组,数组中的每个元素将被设置为 Empty。 对象数组,数组中的每个元素被重置为特殊值 ...
(0, 2) = "Jane Eyre" varArray(1, 0) = "Accountant" varArray(1, 1) = "Secretary" varArray(1, 2) = "Doctor" ReDim Preverve varArray(1, 3) ' 重新定义二维数组,变成两行四列 'populate the array with additional values varArray(0, 3) = "Rob Barnes" varArray(1, 3) = "...
i'm wondering if this is possible. i currently have to enter a formula in a cell and then work with the date in that range. i can get the results of the unique function into an array, but not the fil... g_keramidas You have to create an array of True/False values and pass t...
' 1D Array json_Converted = ConvertToJson(JsonValue(json_Index), Whitespace, json_CurrentIndentation + 1)' For Arrays/Collections, undefined (Empty/Nothing) is treated as null If json_Converted = "" Then ' (nest to only check if converted = "") If json_IsUndefined(JsonValue(json_Index...