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Why is an int in OCaml only 31 bits?
Haven't seen this "feature" anywhere else. I know that the 32nd bit is used for garbage collection. But why is it that way only for ints and not for the other basic types?
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What is a race condition?
When writing multithreaded applications, one of the most common problems experienced is race conditions.
18 Answers
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Passing enum or object through an intent (the best solution)
I have an activity that when started needs access to two different ArrayLists. Both Lists are different Objects I have created myself.
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How can I access Google Sheet spreadsheets only with Javascript?
...oogle spreadsheet data (if they are published) via the JSON api:
https://github.com/mikeymckay/google-spreadsheet-javascript
You can see it in action here:
http://mikeymckay.github.com/google-spreadsheet-javascript/sample.html
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How to use permission_required decorators on django class-based views
I'm having a bit of trouble understanding how the new CBVs work. My question is this, I need to require login in all the views, and in some of them, specific permissions. In function-based views I do that with @permission_required() and the login_required attribute in the view, but I don't know how ...
Non greedy (reluctant) regex matching in sed?
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Neither basic nor extended Posix/GNU regex recognizes the non-greedy quantifier; you need a later regex. Fortunately, Perl regex for this context is pretty easy to get:
perl -pe 's|(http://.*?/).*|\1|'
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How does Dijkstra's Algorithm and A-Star compare?
I was looking at what the guys in the Mario AI Competition have been doing and some of them have built some pretty neat Mario bots utilizing the A* (A-Star) Pathing Algorithm.
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Spark java.lang.OutOfMemoryError: Java heap space
...your nodes are configured to have 6g maximum for Spark (and are leaving a little for other processes), then use 6g rather than 4g, spark.executor.memory=6g. Make sure you're using as much memory as possible by checking the UI (it will say how much mem you're using)
Try using more partitions, you sho...
Make sure that the controller has a parameterless public constructor error
...ial which has worked great, until I modified my DbContext to have an additional constructor. I am now having issues with the resolution and not sure what to do to fix this. Is there an easy way to force it to grab the parameterless constructor or I am approaching this incorrectly?
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Java Enum definition
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It means that the type argument for enum has to derive from an enum which itself has the same type argument. How can this happen? By making the type argument the new type itself. So if I've got an enum called StatusCode, it w...