假设我有一个很大的区分联合类型: type Thing =
| One of int
| Two of string
| Three of bool option
...
而且我有这样的功能: let comp a b = match a, b with
| One _, One _ -> true
| Two _, Two _ -
匹配我的术语列表如下: a
abc
a abc
a a abc
abc
我想匹配的文本的条款,或者变更为“字词1,词条2”的名字。但我想找到最长的匹配作为正确的匹配。 Text: I have a and abc maybe abc again and also a a abc.
Output: I have term1 and term2 maybe term2 again and
我有以下SQL结果条目。 Result
---------
TW - 5657980 Due Date updated : to <strong>2017-08-13 10:21:00</strong> by <strong>System</strong>
TW - 5657980 Priority updated from <strong> Medium</strong> to <stro
在Scala中,案例类看起来是这样的: val alice = Person("Alice", 25, Address("1 Scala Lane", "Chicago", "USA"))
val bob = Person("Bob", 29, Address("2 Java Ave.", "Miami", "USA"))
val charlie = Person("Charlie", 3
此代码编译的F#就好以及OCaml的: let testmatch k =
match k with
| jqk3jtl23jtlk123 -> true
我已经在这两个FSI和UTOP测试。它总是返回true。 jqk3jtl23jtlk123是完全随机的,其类型推断为'a。即使我约束k与数据类型(如let testmatch (k: int) =)汇编(虽然明显制约te
目前在c#7(版本15.3.4)中,以下代码有效编译,但两个变量都合法无法使用。 switch(fruit)
{
case Apple apple:
case Orange orange:
// impossible to use apple or orange
break;
case Banana banana:
break;
}