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What does SQL clause “GROUP BY 1” mean?
Someone sent me a SQL query where the GROUP BY clause consisted of the statement: GROUP BY 1 .
6 Answers
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Why git can't do hard/soft resets by path?
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as mentioned by @void.pointer checkout won't remove files. If you want that behavior then look at this answer. Still, I hope some day we'll get git reset --hard -- <path>. There are legitimate use cases for it.
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What's the correct way to communicate between controllers in AngularJS?
...broadcast + $scope.$on but rather $rootScope.$emit+ $rootScope.$on. The former can cause serious performance problems as raised by @numan. That is because the event will bubble down through all scopes.
However, the latter (using $rootScope.$emit + $rootScope.$on) does not suffer from this and can ...
An invalid form control with name='' is not focusable
I have an acute problem on my website.
In Google Chrome some customers are not able to proceed to my payment page.
When trying to submit a form I get this error:
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Get type of a generic parameter in Java with reflection
Is it possible to get the type of a generic parameter?
18 Answers
18
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Java compile speed vs Scala compile speed
...g in Scala for a while and I like it but one thing I'm annoyed by is the time it takes to compile programs. It's seems like a small thing but with Java I could make small changes to my program, click the run button in netbeans, and BOOM, it's running, and over time compiling in scala seems to consu...
Suppress/ print without b' prefix for bytes in Python 3
...ust posting this so I can search for it later, as it always seems to stump me:
4 Answers
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Android adding simple animations while setvisibility(view.Gone)
...first you can let android animate layout changes for you. That way every time you change something in the layout like changing view visibility or view positions android will automatically create fade/transition animations. To use that set
android:animateLayoutChanges="true"
on the root node in y...
Using Moq to mock an asynchronous method for a unit test
I am testing a method for a service that makes a Web API call. Using a normal HttpClient works fine for unit tests if I also run the web service (located in another project in the solution) locally.
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How do I check if an integer is even or odd? [closed]
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I then compiled these with gcc 4.1.3 on one of my machines 5 different times:
With no optimization flags.
With -O
With -Os
With -O2
With -O3
I examined the assembly output of each compile (using gcc -S) and found that in each case, the output for and.c and modulo.c were identical (they both us...