当你想要返回一个闭包时,我理解嵌套函数的好处。但是,当一个函数从未在定义它的函数之外使用时,保持它的嵌套是否有成本?let private validate number = printfn "%i Greater than 100: %s" i ((validate i).ToString())let validateAndPrint (i : int) = nu
let log = new Mock<ILog>()let expr> Expression<Action<ILog>>)如果出现以下错误,此代码将失败:
无法将'System.Linq.Expressions.MethodCallExpressionN‘类型的对象转换为'System.Linq.Ex
Microsoft.FSharp.Core.PrintfImpl+Final1@224[TState,TResidue,TResult,A].Invoke (Microsoft.FSharp.Core.FSharpFuncworkingDir, System.String args) [0x00048] in <c9993ec69ddb4848af99438005012ea7>:0
at FSI_0005.Build[T] (Microsoft.FSharp.Core.FSharpFunc`2[T,TResult] a