lazylist

What's the difference between LazyList and Stream in Scala?

由 我的梦境 提交于 2021-01-02 06:11:07
问题 I noticed that Stream is deprecated in Scala 2.13 and they suggest using LazyList . They also say "Use LazyList (which is fully lazy) instead of Stream (which has a lazy tail only)". What does it exactly mean ? Why did they deprecate Stream ? 回答1: NthPortal, a contributor to LazyList , states in Update and improve LazyList docs #7842 The key difference between LazyList and Stream - and its key feature - is that whether or not it is lazy is evaluated lazily. I'm not sure how best to convey

What's the difference between LazyList and Stream in Scala?

由 孤街浪徒 提交于 2021-01-02 06:08:26
问题 I noticed that Stream is deprecated in Scala 2.13 and they suggest using LazyList . They also say "Use LazyList (which is fully lazy) instead of Stream (which has a lazy tail only)". What does it exactly mean ? Why did they deprecate Stream ? 回答1: NthPortal, a contributor to LazyList , states in Update and improve LazyList docs #7842 The key difference between LazyList and Stream - and its key feature - is that whether or not it is lazy is evaluated lazily. I'm not sure how best to convey

External vs Internal memory storage . What shall i use?

由 房东的猫 提交于 2019-12-24 09:58:29
问题 I'm using a LazyList version in order to load images . It uses external storage , what is not bad . But in order to not show that files to everyone with a filebrowser in hand , i have thought to use internal memory instead , the max amount of memory for that is (5mB). What should i do? Are there any other possibilities?‎ 回答1: AFAIK there are no limits on internal memory per application. But, it's true, that this memory usually runs low if users have lots of apps on device so you should not

Lazylist Layout

由 ぐ巨炮叔叔 提交于 2019-12-14 03:09:06
问题 I created my own Lazylist which originally created by Fedor here(Lazy load of images in ListView). I am trying to make my own custom Layout which looks like the image below. Is there anyway to accomplish this? 回答1: modify your item.xml like this way <RelativeLayout android:layout_height="55sp" android:layout_width="fill_parent" android:padding="5sp" android:layout_marginLeft="6sp" android:layout_marginRight="6sp" android:layout_marginBottom="3sp" android:layout_marginTop="3sp"> <ImageView

What OCaml libraries are there for lazy list handling?

由 …衆ロ難τιáo~ 提交于 2019-12-12 13:39:59
问题 What OCaml libraries are out there that provide lazy list handling? I am looking for something along these lines: type 'a lazy_list = (*'*) | Nil | Cons of 'a * 'a lazy_list lazy_t let from f = let rec gen n = lazy ( match f n with | Some x -> Cons (x, gen (n + 1)) | None -> Nil ) in gen 0 Integration with the Stream type and syntactic sugar for backtracking Camlp4 parsers would be nice. 回答1: Ocaml Batteries has a lazy list module, check out the to_stream function. As for backtracking, you

Out Of memory error while using LazyList in ListView [duplicate]

由 旧城冷巷雨未停 提交于 2019-12-08 13:48:36
问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: Out Of memory error using Universal Image Loader and images getting refreshed I have been following the Tutorials on lazy loading the images in a list view and than I implemented LazyList . The code is working properly as per my requirements however it is giving Out Of Memory Errors at some stages. I am using the same code of ImageLoader, Memory cache, LazyAdapter, FileChache and Utils. Here is LazyAdapter class

LazyList<T> vs System.Lazy<List<T>> in ASP.NET MVC 2?

由 自闭症网瘾萝莉.ら 提交于 2019-12-03 09:13:23
问题 In Rob Conery's Storefront series, Rob makes extensive use of the LazyList<..> construct to pull data from IQueryables . How does this differ from the System.Lazy<...> construct now available in .NET 4.0 (and perhaps earlier)? More depth based on DoctaJones' great answer: Would you recommend one over the other if I wanted to operate on IQueryable as a List<T> ? I'm assuming that since Lazy<T> is in the framework now, it is a safer bet for future support and maintainability? If I want to use a

LazyList<T> vs System.Lazy<List<T>> in ASP.NET MVC 2?

由 牧云@^-^@ 提交于 2019-12-02 23:29:17
In Rob Conery's Storefront series, Rob makes extensive use of the LazyList<..> construct to pull data from IQueryables . How does this differ from the System.Lazy<...> construct now available in .NET 4.0 (and perhaps earlier)? More depth based on DoctaJones' great answer: Would you recommend one over the other if I wanted to operate on IQueryable as a List<T> ? I'm assuming that since Lazy<T> is in the framework now, it is a safer bet for future support and maintainability? If I want to use a strong type instead of an anonymous ( var ) type would the following statements be functionally

Android: onListItemClick in Activity

由 纵然是瞬间 提交于 2019-11-30 12:49:49
问题 Previous time I asked a question here I learned a lot so I guess it's worth a shot to try it again. I am using the lazy list by Fedor from this link: Lazy load of images in ListView It's working like a charm. BUT, Fedor is making his main class extend Activity instead of ListActivity . Because of this, I am no longer able to use a listItemClick listener. Eclipse declares some errors around onListItemClick() . It works when I turn @Override protected void onListItemClick(ListView l, View v,

What&#39;s LazyList?

由 时光怂恿深爱的人放手 提交于 2019-11-26 04:23:10
I can't find in any really credible source explaining what LazyList is. Anyone? Raghunandan Lazy List is lazy loading of images from sd-card or from server using urls. It is like on demand loading images. Images can be cached to local sd-card or phone memory. Url is considered the key. If the key is present in sd-card, display images from sd-card else display image by downloading from server and cache the same to location of your choice. The cache limit can set. You can also choose your own location to cache images. Cache can also be cleared. Instead of user waiting to download large images
订阅 lazylist