Question

我不想写司的简单职能,但我有错误。

PS C:Usersjohn> Function Div($x, $y) { $x / $y }
PS C:Usersjohn> Div (1, 1)
Method invocation failed because [System.Object[]] doesn t contain a method named  op_Division .
At line:1 char:28
+ Function Div($x, $y) { $x / <<<<  $y }
    + CategoryInfo          : InvalidOperation: (op_Division:String) [], RuntimeException
    + FullyQualifiedErrorId : MethodNotFound

What is my mistake? Thanks

Answer 1

你错误地援引这一职能。职能援引权:

Div 1 1

而(1,1)是反对。

如果你想要防止使用错误,则宣布职能为:

Function Div([Parameter(Mandatory=$true)][double]$x, [Parameter(Mandatory=$true)][double]$y) { $x / $y }

[参数(强制性=美元)]确保这两种数值都得到确认。司总是在权力分配方面进行双重划分,即使有愤怒,但执行型号[双重]却赢得了固定的惯用,并确保投入类型是你所期望的。

Answer 2

You should cast the arguments of the division operator to ints in your function body, otherwise they will be treated as strings (even if they look like ints), and strings don t support the / operator:

<代码>[int]x / [int]美元

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