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Favicon dimensions? [duplicate]

... Short answer The favicon is supposed to be a set of 16x16, 32x32 and 48x48 pictures in ICO format. ICO format is different than PNG. Non-square pictures are not supported. To generate the favicon, for many reasons explained bel...
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How to check if std::map contains a key without doing insert?

The only way I have found to check for duplicates is by inserting and checking the std::pair.second for false , but the problem is that this still inserts something if the key is unused, whereas what I want is a map.contains(key); function. ...
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Naming convention for Scala constants?

What is the naming convention for Scala constants? A brief search on StackOverflow suggestions uppercase CamelCase (the first line below), but I wanted to double-check. ...
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What exactly are “spin-locks”?

...in the WAIT state and preempts it by scheduling other threads on the same core. This has a performance penalty if the wait time is really short, because your thread now has to wait for a preemption to receive CPU time again. Besides, kernel objects are not available in every state of the kernel, suc...
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Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?

I recently created a simple application for testing the HTTP call throughput that can be generated in an asynchronous manner vs a classical multithreaded approach. ...
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How to divide flask app into multiple py files?

...les, see the Flask docs. However, Flask uses a concept of blueprints for making application components and supporting common patterns within an application or across applications. You can create a sub-component of your app as a Blueprint in a separate file: simple_page = Blueprint('simple_pa...
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Sorting an array of objects in Ruby by object attribute?

I have an array of objects in Ruby on Rails. I want to sort the array by an attribute of the object. Is it possible? 9 Answ...
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Thread vs ThreadPool

...tween using a new thread and using a thread from the thread pool? What performance benefits are there and why should I consider using a thread from the pool rather than one I've explicitly created? I'm thinking specifically of .NET here, but general examples are fine. ...
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Get just the filename from a path in a Bash script [duplicate]

... Most UNIX-like operating systems have a basename executable for a very similar purpose (and dirname for the path): pax> a=/tmp/file.txt pax> b=$(basename $a) pax> echo $b file.txt That unfortunately just gives you the file name, including the extension, so you'd need to fin...
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Differences between git remote update and fetch?

... UPDATE: more information! I should have done this from the start: I grepped the Git release notes in Git's Git repo (so meta!) grep --color=always -R -C30 fetch Documentation/RelNotes/* | less Then I did a less search for --all, a...