stability

Http-Conduit frequent connection failures

二次信任 提交于 2019-12-05 01:48:36
I am writing application which will download some files by HTTP. Up to some point I was using following code snippet to download page body: import network.HTTP simpleHTTP (getRequest "http://www.haskell.org/") >>= getResponseBody It was working fine but it could not establish connection by HTTPS protocol. So to fix this I have switched to HTTP-Conduit and now I am using following code: simpleHttp' :: Manager -> String -> IO (C.Response LBS.ByteString) simpleHttp' manager url = do request <- parseUrl url runResourceT $ httpLbs request manager It can connect to HTTPS but new frustrating problem

Directed Acyclic Graph with multi-parent nodes

孤街醉人 提交于 2019-12-04 19:24:50
Given: A directed acyclic graph with weighted edges, where a node can have multiple parents. Problem: For each child of root node, find a minimum-cost(sum of weights) path from such a child to some leaf which can be reached. A node can only be present in one such min-cost paths. Example graph: In the above graph, for node 2, all the available paths are: 2 -> 5 2 -> 1 -> 9 -> 6 2 -> 1 -> 10 -> 6 Among which 2 -> 1 -> 10 -> 6 has minimum cost of 3.5 Similarly, for node 4, all the available paths are: 4 -> 11 -> 8 4 -> 7 -> 10 -> 6 Among which 4 -> 7 -> 10 -> 6 has minimum cost of 3.0 The result

Composer - The requested package exists as but these are rejected by your constraint

六眼飞鱼酱① 提交于 2019-12-03 04:43:30
问题 When I run my install from composer, I have this error : λ composer install You are running composer with xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug Loading composer repositories with package information Updating dependencies (including require-dev) Your requirements could not be resolved to an installable set of packages. Error : Problem 1 - The requested package antoineb1/smoney_bundle 1.0 exists as antoineb1/smoney_bundle[dev-master]

What are the things you would like improved in the Ruby language?

*爱你&永不变心* 提交于 2019-12-02 20:49:30
What are the things you wish Ruby (and more generally the Ruby community) would improve? I read somewhere that Ruby is the love-child of Smalltalk and LISP, with Miss Perl as the Nanny. I have a lot of respect for Ruby's parents, but I'm not sure I like the influence Miss Perl had on the child. Specifically, I don't like the predefined variables: I need a cheat sheet to know what they mean. You could say "just don't use them". Well, I don't... but other people do. And when I download a plugin on the Web, I have no choice but to fetch my cheat-sheet if I ever need to go and touch the source

Composer - The requested package exists as but these are rejected by your constraint

 ̄綄美尐妖づ 提交于 2019-12-02 17:52:32
When I run my install from composer, I have this error : λ composer install You are running composer with xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug Loading composer repositories with package information Updating dependencies (including require-dev) Your requirements could not be resolved to an installable set of packages. Error : Problem 1 - The requested package antoineb1/smoney_bundle 1.0 exists as antoineb1/smoney_bundle[dev-master] but these are rejected by your constraint. My composer.json { "name": "project", "license":

Smart Garbage Collection?

爱⌒轻易说出口 提交于 2019-12-01 21:09:48
You can garbage collect in Java simply by calling System.gc() but sometimes this "stalls" the application. Is it a bad idea to garbage collect like this and avoid stalls: new Thread(new Runnable() { public void run() { System.gc(); } }).start(); Or might this lead to even more problems? Yes, most times it is a very bad idea to call System.gc(). There are exceptions but they are few and it is mostly better to spend the time making sure you are not doing things that hurt performance in a GC environment and to study and make sure you understand how a gc works than to try to handle it yourself by

Stability of .NET serialization across different framework versions

狂风中的少年 提交于 2019-11-29 10:02:37
A project I'm working on requires serializing a data structure before shutting down and restores its state from this serialized data when it start up again. Last year, we were building for .NET 1.1, and ran into a tricky issue where our code ran on .NET 2.0 a customer upgraded with some software that somehow set 1.1 as default our code ran on .NET 1.1 and was unable to deserialize its stored state This particular issue was "resolved" by barring that particular software upgrade, and shouldn't be a problem now that we're targeting the .NET 2.0 framework (so we can't possibly run on 1.1). What is

What is stability in sorting algorithms and why is it important?

别来无恙 提交于 2019-11-26 00:11:33
问题 I\'m very curious, why stability is or is not important in sorting algorithms? 回答1: A sorting algorithm is said to be stable if two objects with equal keys appear in the same order in sorted output as they appear in the input array to be sorted. Some sorting algorithms are stable by nature like Insertion sort, Merge Sort, Bubble Sort, etc. And some sorting algorithms are not, like Heap Sort, Quick Sort, etc. Background : a "stable" sorting algorithm keeps the items with the same sorting key