partialfunction

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Partial Function pattern match split into a class and a trait

Lift uses a PartialFunction on their implementation of Comet Actors, and you usually end up with this on your class:[详细]

2023-03-23 16:55 分类：问答
Scala PartialFunctions from concrete ones

Is there any quick way to use as a concrete function (of type, say, (A) => B) as a PartialFunction[A, B]?The most concise syntax I know of is:[详细]

2023-03-23 05:53 分类：问答
How can I easily define more complex PartialFunctions in Scala?

PartialFunctions In Scala, a PartialFunction is, in short, a function that additionally defines an isDefinedAt method.[详细]

2023-03-18 10:00 分类：问答
How can I use PartialFunctions to compose my match statements?

Consider the following: scala> object Currency extends Enumeration { |type Currency = Value |val USD = Value[详细]

2023-03-09 23:52 分类：问答
Scala, partial functions

Is there any way to create a PartialFunction except th开发者_Python百科rough the case statement?[详细]

2023-02-25 02:33 分类：问答
Scala Option's collect method doesn't like my PartialFunction

I think I\'m missing something: scala> S开发者_StackOverflow中文版ome(1) collect ({ case n if n > 0 => n + 1; case _ => 0})[详细]

2023-02-14 11:46 分类：问答
Partial function application prematurely runs codeblock when used with underscore

Given: def save(f: => Any)(run:Boolean) { if (run) { println(\"running f\"); f } else println(\"not running f\") }[详细]

2023-02-09 03:29 分类：问答
Is there a nicer way of lifting a PartialFunction in Scala?

I occasionally come across the following pattern, where I essentially have a PartialFunction[SomeType,AnotherType], and want to treat it as a Function[SomeType,Option[AnotherType], eg:[详细]

2023-02-05 01:25 分类：问答
How to implement a partial function in a subclass

I\'m trying to design a couple of classes that inherit a partial function, but I don\'t seem to be able to get the syntax quite r开发者_如何学Goight. My superclass looks like this:[详细]

2023-01-06 13:32 分类：问答
When is a scala partial function not a partial function?

While creating a map of String to partial functions I ran into unexpected behavior.When I create a partial function as a map element it works fine.When I allocate to a val it invokes instead.Trying to[详细]

2022-12-30 18:42 分类：问答