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Does MongoDB's $in clause guarantee order
...retrieved. That of course will be the natural order or by the selected index order as shown.
If you need to preserve this order, then you basically have two options.
So let's say that you were matching on the values of _id in your documents with an array that is going to be passed in to the $in as...
Work on a remote project with Eclipse via SSH
I have the following boxes:
8 Answers
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Ruby: Change negative number to positive number?
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Put a negative sign in front of it.
>> --300
=> 300
>> x = -300
=> -300
>> -x
=> 300
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“did you run git update-server-info” error on a Github repository
...e repo. Added the github account as a collaborator for the repo and that fixed it.
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Programmatically find the number of cores on a machine
... a machine has from C/C++ in a platform-independent way? If no such thing exists, what about determining it per-platform (Windows/*nix/Mac)?
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Static nested class in Java, why?
...r classes) just like any other top-level class
– tonix
Dec 7 '14 at 10:38
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Is the sizeof(some pointer) always equal to four?
For example:
sizeof(char*) returns 4. As does int* , long long* , everything that I've tried. Are there any exceptions to this?
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Difference between new and override
... on the type of the variable depends on which method will get called. For example:
BaseClass instance1 = new SubClass();
instance1.DoIt(); // Calls base class DoIt method
SubClass instance2 = new SubClass();
instance2.DoIt(); // Calls sub class DoIt method
This can be really confusing and result...
Passing variables through handlebars partial
I'm currently dealing with handlebars.js in an express.js application. To keep things modular, I split all my templates in partials.
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How do I convert Long to byte[] and back in java
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public byte[] longToBytes(long x) {
ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
buffer.putLong(x);
return buffer.array();
}
public long bytesToLong(byte[] bytes) {
ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
buffer.pu...