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在 VB.net 中这个等价物是什么
int? x; int s; s = x ?? 5;
if() 运算符是 vb 中的空值合并运算符。
s = If(x, 5)
vb.net 中有三种方法可以为空声明
Dim x? As Integer Dim x As Integer? Dim x As Nullable(Of Integer) Dim s As Integer s = If(x, 5)