lazy-evaluation

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How is foldl lazy?

There are lots of good questions and answers about foldl, foldr, and foldl\' in Haskell. So now I know that:[详细]

2023-04-05 23:51 分类：问答
What does a lazy val do?

I noticed that Scala provide lazy vals. But I开发者_Go百科 don\'t get what they do. scala> val x = 15[详细]

2023-04-05 22:54 分类：问答
Javascript functional lazy evaluation example explanation required

Browsing Hacker News and I come across http://streamjs.org/ which is an implementation of a lazy evaluated collection in Javascript.[详细]

2023-04-04 08:12 分类：问答
Fedors Lazylist sometimes showing the same image

I am using Fedors implementation of lazy loading images. But sometimes the first item in the listview gets the same image as the last visible item in the list. All other items gets the correct image.[详细]

2023-04-01 06:22 分类：问答
Hard to understand Haskell memory allocation behaviour

I stumbled upon Haskell and FP and got stunned by the possibilities. And the old maths nerd inside me had no trouble writing naive code for actual useful purposes. However inspite of all the reading I[详细]

2023-04-01 00:45 分类：问答
Lazily evaluated indexed sequence type

I need to build a sequence of objects that are loaded from an external resource. This loading being an expensive operation needs to be delayed until the time the objects are needed. After the collecti[详细]

2023-03-30 20:37 分类：问答
Android memory management

I am working on an Android app, that has lots of images (a few hundred) to be displayed in a grid format. I am using a custom HorizontalListView and a couple of LazyLoading, Caching techniques to achi[详细]

2023-03-27 02:14 分类：问答
how to use lazy load or async task in List View

I am making a list of view in my application that shows all installed applications in the users device.It shows the name and the icon.The list view takes very long to load and the UI is unresponsive w[详细]

2023-03-26 15:00 分类：问答
When does a Stream need to be lazy?

The following are both meant to create a Stream of integers: val s: Stream[Int] = 1 #:: s.map(_ + 1) def makeStream = {[详细]

2023-03-26 01:08 分类：问答
Some constructor with asInstanceOf

When I was writing my recent answer I also tried to solve the problem in more \"functional\" way, but stuck with the following problem:[详细]

2023-03-25 18:15 分类：问答