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What are these attributes: `aria-labelledby` and `aria-hidden`
...sible Rich Internet Applications (ARIA) defines ways to make Web
content and Web applications (especially those developed with Ajax and
JavaScript) more accessible to people with disabilities.
To be precise for your question, here is what your attributes are called as ARIA attribute states and...
Polymorphism vs Overriding vs Overloading
...is not definable for Humans. It is only definable for the subclasses Male and Female. Also, Human is an abstract concept — You cannot create a human that is neither Male nor Female. It’s got to be one or the other.
So we defer the implementation by using the abstract class.
public class Mal...
How do I align views at the bottom of the screen?
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The modern way to do this is to have a ConstraintLayout and constrain the bottom of the view to the bottom of the ConstraintLayout with app:layout_constraintBottom_toBottomOf="parent"
The example below creates a FloatingActionButton that will be aligned to the end and the bottom ...
Save PL/pgSQL output from PostgreSQL to a CSV file
...ing easy to re-use or automate, you can use Postgresql's built in COPY command. e.g.
Copy (Select * From foo) To '/tmp/test.csv' With CSV DELIMITER ',' HEADER;
This approach runs entirely on the remote server - it can't write to your local PC. It also needs to be run as a Postgres "superuser" (no...
What is the difference between iterator and iterable and how to use them?
I am new in Java and I'm really confused with iterator and iterable. Can anyone explain to me and give some examples?
13 An...
Create directories using make file
I'm a very new to makefiles and i want to create directories using makefile. My project directory is like this
9 Answers
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How do I work with a git repository within another repository?
I have a Git media repository where I'm keeping all of my JavaScript and CSS master files and scripts that I'll use on various projects.
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AVAudioPlayer throws breakpoint in debug mode
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Add your exception breakpoint and edit the exception type from "All" to "Objective-C exceptions"
Some classes in AudioToolbox throw regular C++ exceptions. You can filter them off this way.
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Increment a value in Postgres
... want to take a value (which is an integer) in a field in a postgres table and increment it by one. For example if the table 'totals' had 2 columns, 'name' and 'total', and Bill had a total of 203, what would be the SQL statement I'd use in order to move Bill's total to 204?
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Running multiple TeamCity Agents on the same computer?
..., each running a single TeamCity build agent. Each machine is very strong, and we'd like to run several build agents on the same machine.
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