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SQLite select where empty?
In SQLite, how can I select records where some_column is empty?
Empty counts as both NULL and "".
4 Answers
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How can you hide database output in Rails console?
In newer version of Rails, I'm guessing from 3 up, database queries are output to the console. This is useful most of the time, but how can you hide it when you do not want to see it?
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$watch'ing for data changes in an Angular directive
How can I trigger a $watch variable in an Angular directive when manipulating the data inside (e.g., inserting or removing data), but not assign a new object to that variable?
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How do I run multiple instances of Android Studio
How do I run multiple instances of Android Studio? A second instance is launched if you select "File\New Project", but "File\Open" and "File\Reopen" does not create a second instance.
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What is the status of JSR 305?
...s such as on generic declarations.
Quoting JSR 308 page:
…this document does not propose any annotations, merely specifying where they can appear in Java code.
JSR 308 (annotations in new places) is included in java 8 under JEP 104.
As of 2017, JSR 305 (new annotations) continues to carry...
Using psql how do I list extensions installed in a database?
...w do I list all extensions that are already installed in a database or schema from psql?
3 Answers
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jQuery - Add ID instead of Class
I'm using the current jQuery :
5 Answers
5
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Default visibility of class methods in PHP
I looked at the manual , but I can't seem to find the answer.
6 Answers
6
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Java Round up Any Number
I can't seem to find the answer I'm looking for regarding a simple question: how do I round up any number to the nearest int ?
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Can a pointer to base point to an array of derived objects?
...he next Rectangle, but a pointer to what would be the next Shape in a presumed array of Shape. Of course, this is undefined behaviour. In your case, you're being lucky and getting a crash.
Using a pointer to Rectangle makes the indexing work correctly.
int main()
{
Rectangle * shapes = new Rect...