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Where to learn about VS debugger 'magic names'
If you've ever used Reflector, you probably noticed that the C# compiler generates types, methods, fields, and local variables, that deserve 'special' display by the debugger. For instance, local variables beginning with 'CS$' are not displayed to the user. There are other special naming conventions...
Operation on every pair of element in a list
...tions as well, permutations() and combinations(). To illustrate how they differ:
product() generates every possible pairing of elements, including all duplicates:
1,1 1,2 1,3 1,4
2,1 2,2 2,3 2,4
3,1 3,2 3,3 3,4
4,1 4,2 4,3 4,4
permutations() generates all unique orderings of each un...
LINQ - Convert List to Dictionary with Value as List
...and put that grouping into a Dictionary<long,List<MyObject>>. If so then try the following
List<MyObject> list = ...;
var map = list
.GroupBy(x => x.KeyedProperty)
.ToDictionary(x => x.Key, x => x.ToList());
...
How to get default gateway in Mac OSX
...n Time Warner's modem decided it wanted the IP my router used to have, and ifconfig lied about the gateway.
– Chris Doggett
Jun 20 '13 at 3:05
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...
How do I view 'git diff' output with my preferred diff tool/ viewer?
When I type git diff , I want to view the output with my visual diff tool of choice (SourceGear "diffmerge" on Windows). How do I configure git to do this?
...
What are the Web.Debug.config and Web.Release.Config files for?
...onfig has two additional files attached to it? Are these files used to specify debug and release specific settings, so you don't clutter up the main Web.config?
...
Get context of test project in Android junit test case
...n().context
}
@Test
fun someTest() {
TODO()
}
}
If you want also app context run:
InstrumentationRegistry.getInstrumentation().targetContext
Full running example: https://github.com/fada21/AndroidTestContextExample
Look here: What's the difference between getTargetCont...
std::shared_ptr thread safety explained
...one thread will call the delete operator on a shared object. I am not sure if it specifically specifies the last thread that deletes its copy of the shared pointer will be the one that calls delete (likely in practice this would be the case).
No they do not, the object stored in it can be simultane...
Saving images in Python at a very high quality
...
If you are using matplotlib and trying to get good figures in a latex document, save as an eps. Specifically, try something like this after running the commands to plot the image:
plt.savefig('destination_path.eps', format='...
How to run a shell script at startup
...executable with:
chmod +x /etc/init.d/start_my_app
Thanks to @meetamit, if this does not run you have to create a symlink to /etc/rc.d/
ln -s /etc/init.d/start_my_app /etc/rc.d/
Please note that on latest Debian, this will not work as your script have to be LSB compliant (provide, at least, th...