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Why does direction of index matter in MongoDB?
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MongoDB concatenates the compound key in some way and uses it as the key in a BTree.
When finding single items - The order of the nodes in the tree is irrelevant.
If you are returning a range of nodes - The elements close to each other will be down the same branches of th...
How to find the mime type of a file in python?
...stance in BLOBs. Let's say you want to dish these files out via a web page and have the client automatically open the correct application/viewer.
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C# binary literals
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C# 7.0 supports binary literals (and optional digit separators via underscore characters).
An example:
int myValue = 0b0010_0110_0000_0011;
You can also find more information on the Roslyn GitHub page.
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Is git good with binary files?
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Out of the box, git can easily add binary files to its index, and also store them in an efficient way unless you do frequent updates on large uncompressable files.
The problems begin when git needs to generate diffs and merges: git cannot generate meaningful diffs, or merge binary file...
Using the rJava package on Win7 64 bit with R
... for Windows x86. On Win 64, the former installs in C:\Program files\Java\ and the latter in C:\Program Files (x86)\Java\ so they do not conflict.
As of Java version 9, support for x86 (win32) has been discontinued. Hence the latest working multi-arch setup is to install both jdk-8u172-windows-i58...
How set the android:gravity to TextView from Java side in Android
I can use android:gravity="bottom|center_horizontal" in xml on a textview to get my desired results, but I need to do this programmatically. My textview is inside a tablerow if that matters in a relativelayout .
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Is it possible to disable floating headers in UITableView with UITableViewStylePlain?
...es'. I'm using the headers of the table view to layout certain images etc. and I'd prefer it if they didn't float but stayed static as they do when the style is set to UITableViewStyleGrouped .
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Why does pylint object to single character variable names?
I'm still getting used to python conventions and using pylint to make my code more pythonic, but I'm puzzled by the fact that pylint doesn't like single character variable names. I have a few loops like this:
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How to avoid .pyc files?
... available
to Python programs as the
sys.dont_write_bytecode variable, and
Python code can change the value to
modify the interpreter’s behaviour.
Update 2010-11-27: Python 3.2 addresses the issue of cluttering source folders with .pyc files by introducing a special __pycache__ subfolder...
How to remove the first commit in git?
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For me, the most secure way is to use the update-ref command:
git update-ref -d HEAD
It will delete the named reference HEAD, so it will reset (softly, you will not lose your work) all your commits of your current branch.
If what you want is to merge the first commit with the s...