Quartz.NET和F＃-SystemTime和KeyMatcher [英] Quartz.NET and F# - SystemTime and KeyMatcher

问题描述

我正在尝试在F＃中使用Quartz.NET，但遇到了一些问题，尽管Quartz.NET在F＃中可用，但似乎没有太多文档，而且我已经

I am trying to work with Quartz.NET in F# and have run into a few issues with the fact that, while Quartz.NET is usable in F#, there does not seem to be much documentation on it, and I've had some difficulty with differences between it and what can find in C#.

我目前遇到的一个问题是设置SystemTime，如该问题所示，
Quartz.net +使用SystemTime.UtcNow进行测试。

One issue I have currently run into is setting SystemTime such as shown in this question, Quartz.net + testing with SystemTime.UtcNow.

我可能是错的，但是我认为F＃中的代码应该是：

I could be wrong, but I thought that the code in F# should be:

SystemTime.Now = fun () -> DateTime(someDate)
SystemTime.UtcNow = fun () -> DateTime(someDate)

但是我收到关于在预期之外使用的过多参数或函数的错误。如果仅使用DateTime构造函数，则会收到与它期望函数的事实有关的错误。

But I get an error about either too many arguments or function used where not expected. If I just use the DateTime constructor, I get an error related to the fact it is expecting a function.

推荐答案

单个 = 是一个相等比较操作。如果要进行赋值，请使用<-赋值运算符。

The single = is an equality comparison operation. If you want to do assignment, use the <- assignment operator.

此外，F＃函数与 Func< T> 相同。通常，当您将它们用作方法参数时，转换会自动发生，但是在这种情况下，您似乎需要显式执行转换：

Apart from that, F# functions aren't the same as Func<T>. Normally, when you use them as method arguments, the conversion happens automatically, but in this case, it seems you'll need to explicitly perform the conversion:

open System
open Quartz

SystemTime.Now <- 
    Func<DateTimeOffset>(
        fun () -> DateTimeOffset(DateTime(2015, 4, 18), TimeSpan.FromHours 2.))
SystemTime.UtcNow <- 
    Func<DateTimeOffset>(
        fun () -> DateTimeOffset(DateTime(2015, 4, 18), TimeSpan.FromHours 2.))

从F＃调用它们也有点

> SystemTime.Now.Invoke();;
val it : DateTimeOffset = 18.04.2015 00:00:00 +02:00
> SystemTime.UtcNow.Invoke();;
val it : DateTimeOffset = 18.04.2015 00:00:00 +02:00

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