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(arr As Variant) As Boolean IsArrayEmpty = IsEmpty(arr) Or UBound(arr) < L...
Sub CheckArrayIsEmpty() Dim json As Object Dim jsonArray As Object ' 假设JSON数据存储在单元格A1中 Dim jsonData As String jsonData = Range("A1").Value ' 创建JSON解析器对象 Set json = CreateObject("Scripting.Dictionary") ' 解析JSON数据 json("data") = JsonConverter.ParseJson(jsonData)...
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...
Check if a value is in an array with this VBA function. If the value is in the VBA array, the function returns true. If the value is not in the array or the array is empty, the VBA function returns false. The function accepts two variants, so it can look for a string in a stri...
问解决尝试在Excel VBA代码中为范围变量赋值时出现的错误EN上次我们对比学习了一下ExcelVBA中数组、集合和...
Within the innerFor loop, an If statement is used to check if the sum of the current element of the “MyArray” array with the index “x” and the current element of the “MyArray” array with the index “j” is equal to90and if “x” is not equal to “j“. If the condition...
Null 与 Empty 不同，其指⽰尚未初始化变量。它与有时称为空字符串的零长度字符串 ('') 也不同。 使⽤ IsNull 函数可确定表达式是否包含 Null 值。有些情况下，您可能希望计算结果为 True 的表达式，如 If Var = Null 和 If Var <> Null 始终为 False 。这是因为包含 Null 的任何表达式本⾝为 ...
Cells.ClearContents End If Next ws End Sub Function IsInArray(stringToBeFound As String, arr As Variant) As Boolean IsInArray = (UBound(Filter(arr, stringToBeFound)) > -1) ’check End Function 根据条件删除row Sub DeleteRows() Dim lastRow As Long Dim i As Long 'Find the last row in...
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' 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...