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When do you use map vs flatMap in RxJava?
...form your json to an object, using map should be enough.
Dealing with the FileNotFoundException is another problem (using map or flatmap wouldn't solve this issue).
To solve your Exception problem, just throw it with a Non checked exception : RX will call the onError handler for you.
Observable.f...
Pass variables to Ruby script via command line
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You need to add #!/usr/bin/env ruby on top of .rb file to be able to run it like this: ./test.rb
– xamenrax
Sep 15 '19 at 13:42
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Mercurial stuck “waiting for lock”
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When "waiting for lock on repository", delete the repository file: .hg/wlock (or it may be in .hg/store/lock)
When deleting the lock file, you must make sure nothing else is accessing the repository. (If the lock is a string of zeros or blank, this is almost certainly true).
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best way to preserve numpy arrays on disk
...ber of ways to store numpy arrays. Few of them support multiple arrays per file, but perhaps it's useful anyway.
Npy and binary files are both really fast and small for dense data. If the data is sparse or very structured, you might want to use npz with compression, which'll save a lot of space b...
Set default syntax to different filetype in Sublime Text 2
How do I set a default filetype for a certain file extension in Sublime Text 2? Specifically I want to have *.cfg files default to having Ini syntax highlighting but I cannot seem to figure out how I could create this custom setting.
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Is there a way to give a specific file name when saving a file via cURL?
I am pulling files using curl in the mac OS X terminal and want to give them different names. Is there a way to specify a name, such as a "save as" function when using curl?
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Android Studio: Add jar as library?
...he libs folder
Right click it and hit 'Add as library'
Ensure that compile files('libs/gson-2.2.4.jar') is in your build.gradle file (or compile fileTree(dir: 'libs', include: '*.jar') if you are using many jar files)
Edit : Use implementation files('libs/gson-2.2.4.jar') (or implementation fileTr...
Check to see if python script is running
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Drop a pidfile somewhere (e.g. /tmp). Then you can check to see if the process is running by checking to see if the PID in the file exists. Don't forget to delete the file when you shut down cleanly, and check for it when you start up....
What exactly are unmanaged resources?
...ything that the garbage collector does not know about. For example:
Open files
Open network connections
Unmanaged memory
In XNA: vertex buffers, index buffers, textures, etc.
Normally you want to release those unmanaged resources before you lose all the references you have to the object managin...
NAnt or MSBuild, which one to choose and when?
...'s all behind the scenes. If you want to get deeper, you can hand edit the files.
Subjective Differences: (YMMV)
NAnt documentation is a little more straightforward. For example, the MSBuild Task Reference lists "Csc Task - Describes the Csc task and its parameters. " (thanks for the "help"?), v...