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Haversine Formula in Python (Bearing and Distance between two GPS points)
...dians() function instead of multiplying by pi/180 - same effect, but a bit more self-documenting.
– Hugh Bothwell
Feb 6 '11 at 15:10
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How can I replace text with CSS?
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Is Meyers' implementation of the Singleton pattern thread safe?
...scusses thread safe implementations of the pattern, and the conclusion is, more or less, that (in C++03) full locking around the instantiating method is basically the simplest way to ensure proper concurrency on all platforms, while most forms of double-checked locking pattern variants may suffer fr...
Mercurial: how to amend the last commit?
...1 undo the last (1) commit(s), so you can do it again (see this answer for more information).
Using the MQ extension, which is shipped with Mercurial
Even if it isn't shipped with Mercurial, the Histedit extension is worth mentioning
You can also have a look on the Editing History page of the Mer...
Dynamically Changing log4j log level
...level is simple; modifying other portions of the configuration will pose a more in depth approach.
LogManager.getRootLogger().setLevel(Level.DEBUG);
The changes are permanent through the life cyle of the Logger. On reinitialization the configuration will be read and used as setting the level at r...
What is monkey patching?
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@LutzPrechelt Could you explain a little bit more on this?
– Calvin Ku
Aug 6 '18 at 2:37
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Problem with converting int to string in Linq to entities
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How to enumerate an object's properties in Python?
...he object's setter (and/or its parents'). It's quite common in python that more things than meet the eye are happening in the background during attribute setting (e.g. sanitation), using setattr() ensures that you don't miss out, or are forced to handle them explicitly yourself.
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Adding devices to team provisioning profile
...matic device provisioning isn't as easy turning it on/off but you can read more here: developer.apple.com/library/ios/qa/qa1814/_index.html
– thattyson
Nov 11 '15 at 0:13
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No ConcurrentList in .Net 4.0?
...mentation had some problems, which I won't get into here. Let me tell you, more importantly, what I learned.
Firstly, there's no way you're going to get a full implementation of IList<T> that is lockless and thread-safe. In particular, random insertions and removals are not going to work, unl...