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mongodb count num of distinct values per field/key
...hie said is that if the grouping is done just "regular" field (string, int etc.) then you don't need the unwind step. Isn't it correct?
– guyarad
Oct 19 '17 at 10:00
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Why am I getting a NoClassDefFoundError in Java?
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This is caused when there is a class file that your code depends on and it is present at compile time but not found at runtime. Look for differences in your build time and runtime classpaths.
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How to deserialize a list using GSON or another JSON library in Java?
...ArrayList that doesn't implement some useful methods like add(), delete(), etc. If you call them an UnsupportedOperationException will be thrown.
In order to get real ArrayList instance you need to write something like this:
List<Video> = new ArrayList<>(Arrays.asList(videoArray));
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How to set RelativeLayout layout params in code not in xml?
...n1 or button2. Secondly, dynamically declared Views (ImageViews, Buttons, etc.) get instantiated with an id of -1. An id of -1 will not work for a rule.
– Craig B
Dec 6 '11 at 17:38
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Error: Configuration with name 'default' not found in Android Studio
...rary folder in your root location of your project and copy all the library files there. For ex YourProject/library then sync it and rest things seems OK to me.
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I can't install python-ldap
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The python-ldap is based on OpenLDAP, so you need to have the development files (headers) in order to compile the Python module. If you're on Ubuntu, the package is called libldap2-dev.
Debian/Ubuntu:
sudo apt-get install libsasl2-dev python-dev libldap2-dev libssl-dev
RedHat/CentOS:
sudo yum ...
How to create a file in memory for user to download, but not through server?
Is there any way I can create a text file on the client side and prompt the user to download it, without any interaction with the server?
I know I can't write directly to their machine (security and all), but can I create and prompt them to save it?
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Recommendation for compressing JPG files with ImageMagick
I want to compress a JPG image file with ImageMagick but can't get much difference in size. By default the output size is bigger than the input. I don't know why, but after adding some +profile options and setting down the quality I can get an smaller size but still similar to original.
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HTML encoding issues - “” character showing up instead of “ ”
... was already correct, simply do this:
Copy all the code inside the .html file.
Open notepad (or any basic text editor) and paste the code.
Go "File -> Save As"
Enter you file name "example.html" (Select "Save as type: All Files (.)")
Select Encoding as UTF-8
Hit Save and you can now delete your...
How can I write data in YAML format in a file?
I need to write the below data to yaml file using Python:
2 Answers
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