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Finding diff between current and last version
...to know the diff between head and any commit you can use:
git diff commit_id HEAD
And this will launch your visual diff tool (if configured):
git difftool HEAD^ HEAD
Since comparison to HEAD is default you can omit it (as pointed out by Orient):
git diff @^
git diff HEAD^
git diff commit_id
...
How do you sort an array on multiple columns?
... for the ordering. The thing you may be missing is that mysortfunction is called multiple times when you use Array.sort until the sorting is completed.
– dcp
Apr 23 '15 at 10:59
3...
How can I iterate over files in a given directory?
... - assuming that you have the directory path as a str object in a variable called directory_in_str:
import os
directory = os.fsencode(directory_in_str)
for file in os.listdir(directory):
filename = os.fsdecode(file)
if filename.endswith(".asm") or filename.endswith(".py"):
...
Is it possible to rotate a drawable in the xml description?
...n XML:
<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="90"
android:toDegrees="90"
android:pivotX="50%"
android:pivotY="50%"
android:drawable="@drawable/mainmenu_backgroun...
CSS /JS to prevent dragging of ghost image?
...uery method: $('#myImage').attr('draggable', false);
document.getElementById('myImage').setAttribute('draggable', false);
<img id="myImage" src="http://placehold.it/150x150">
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How can I get my webapp's base URL in ASP.NET MVC?
...u anticipate using it in multiple classes in your app, then I use a folder called Helpers in the base of my app, I have a static class called Statics and I put functions like the above there... just make sure you change the above from public string GetBaseUrl() to public static string GetBaseUrl()
...
Using capistrano to deploy from different git branches
... config/deploy.rb:
set :branch, ENV['BRANCH'] if ENV['BRANCH']
and then call capistrano with:
cap production deploy BRANCH=master
This solution works with Capistrano < 3.1:
# call with cap -s env="<env>" branch="<branchname>" deploy
set :branch, fetch(:branch, "master")
set :e...
What is the garbage collector in Java?
...f those things which are easy to make mistakes, which can lead to what are called memory leaks -- places where memory is not reclaimed when they are not in use anymore.
Automatic memory management schemes like garbage collection makes it so the programmer does not have to worry so much about memory...
How can a windows service programmatically restart itself?
...rget the name of it). Then, anytime you want the service to restart, just call Environment.Exit(1) (or any non-zero return) and the OS will restart it for you.
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Inspecting standard container (std::map) contents with gdb
...std::map with 2 elements = {[1] = 2, [2] = 4}
If it doesn't work automatically for you see the first bullet point on the STL Support page of the GDB wiki.
You can write Python pretty printers for your own types too, see Pretty Printing in the GDB manual.
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