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Error Domain=NSURLErrorDomain Code=-1005 “The network connection was lost.”

... had this exact error and it turned out to be an issue with the underlying HTTP implementation of NSURLRequest: As far as we can tell, when iOS 8/9/10/11 receive an HTTP response with a Keep-Alive header, it keeps this connection to re-use later (as it should), but it keeps it for more than the tim...
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Number.sign() in javascript

Wonder if there are any nontrivial ways of finding number's sign ( signum function )? May be shorter / faster / more elegant solutions than the obvious one ...
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How can I search Git branches for a file or directory?

... git log + git branch will find it for you: % git log --all -- somefile commit 55d2069a092e07c56a6b4d321509ba7620664c63 Author: Dustin Sallings <dustin@spy.net> Date: Tue Dec 16 14:16:22 2008 -0800 added somefile % git branch -a --contains 55d2069 otherbranch Supports globbing,...
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Maximum concurrent Socket.IO connections

... This article may help you along the way: http://drewww.github.io/socket.io-benchmarking/ I wondered the same question, so I ended up writing a small test (using XHR-polling) to see when the connections started to fail (or fall behind). I found (in my case) that th...
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What is better, adjacency lists or adjacency matrices for graph problems in C++?

... It is slow to iterate over all edges It is slow to add/delete a node; a complex operation O(n^2) It is fast to add a new edge O(1) Adjacency List Memory usage depends on the number of edges (not number of nodes), which might save a lot of memory if the adjacency matrix is sparse Finding the...
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How to add external library in IntelliJ IDEA?

... Then "Refresh project so libs show up in the structure". I could find no command to "refresh". How does one refresh a project? Beginners have a difficult time. :-( – Rafael_Espericueta Dec 20 '15 at 21:24 ...
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position: fixed doesn't work on iPad and iPhone

...e Quirksmode.org site has a very good blog post that explains the problem: http://www.quirksmode.org/blog/archives/2010/12/the_fifth_posit.html Also see this page for a compatibility chart showing which mobile browsers support position:fixed;: http://www.quirksmode.org/m/css.html (but note that th...
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Private setters in Json.Net

...serializeObject<Model>(json, settings); You can read about it here: http://danielwertheim.se/json-net-private-setters-nuget/ GitHub repo: https://github.com/danielwertheim/jsonnet-privatesetterscontractresolvers Old answer (still valid) There are two alternatives that can solve the problem. A...
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Scala framework for a Rest API Server? [closed]

... In no particular order: Akka HTTP Spray Paypal squbs (Akka/Spray) DropWizard REST.li http4s Blue Eyes Finagle - A fault tolerant, protocol-agnostic RPC system Play! and Play-mini! (article) (tutorial) Lift / Lift JSON.- makes it simple to provide R...
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Python equivalent of D3.js

...dated more recently. Though the examples are all static D3. more info: https://github.com/wrobstory/vincent https://pypi.python.org/pypi/vincent/0.1.6 The graphs can be viewed in Ipython, just add this code vincent.core.initialize_notebook() Or output to JSON where you can view the JSON o...