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Eclipse - no Java (JRE) / (JDK) … no virtual machine

... copying it from another computer: there is no special installation steps, and you can have as many different JVM versions (1.4, 5.0, 6.0...) as you want, "installed" (copied) almost anywhere on your disk. I would recommend to always run Eclipse with the lastest JRE possible (to benefit from the lat...
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R memory management / cannot allocate vector of size n Mb

...e Matrix package for e.g.) for sparse matrices. Keep all other processes and objects in R to a minimum when you need to make objects of this size. Use gc() to clear now unused memory, or, better only create the object you need in one session. If the above cannot help, get a 64-bit machine with a...
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Vertex shader vs Fragment Shader [duplicate]

...ng is not quite clear to me. What exactly is the difference between vertex and fragment shaders? And for what situations is one better suited than the other? ...
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How do I find out which DOM element has the focus?

...ript, which element currently has focus. I've been looking through the DOM and haven't found what I need, yet. Is there a way to do this, and how? ...
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What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?

...echnically, the first raises a RuntimeError with the message set to "foo", and the second raises an Exception with the message set to "foo". Practically, there is a significant difference between when you would want to use the former and when you want to use the latter. Simply put, you probably w...
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JPA OneToMany not deleting child

I have a problem with a simple @OneToMany mapping between a parent and a child entity. All works well, only that child records are not deleted when I remove them from the collection. ...
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CURL alternative in Python

...r.add_password(None, 'https://app.streamsend.com/emails', 'login', 'key') handler = urllib2.HTTPBasicAuthHandler(manager) director = urllib2.OpenerDirector() director.add_handler(handler) req = urllib2.Request('https://app.streamsend.com/emails', headers = {'Accept' : 'application/xml'}) result =...
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Does every Core Data Relationship have to have an Inverse?

Let's say I have two Entity classes: SocialApp and SocialAppType 8 Answers 8 ...
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SortedList, SortedDictionary and Dictionary

...at SortedList<TKey, TValue> SortedDictionary<TKey, TValue> and Dictionary<TKey, TValue> implement the same interfaces. ...
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What is a good choice of database for a small .NET application? [closed]

I'm developing a small application with C# in .NET and I want to have a small light weight database which does not use much resources. ...