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findViewById in Fragment
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Use getView() or the View parameter from implementing the onViewCreated method. It returns the root view for the fragment (the one returned by onCreateView() method). With this you can call findViewById().
@Override
public void onViewCreated(View view, @Nulla...
How can a Java variable be different from itself?
...m.out.println("Not ok");
}
Not ok
You can do the same with Double.NaN.
From JLS §15.21.1. Numerical Equality Operators == and !=:
Floating-point equality testing is performed in accordance with the rules of the IEEE 754 standard:
If either operand is NaN, then the result of == is false but th...
.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
... there will never be any confusion regarding where the exception is coming from- the framework, or your application. The framework will never throw your custom exceptions.
UPDATE: I agree with the comments, so I have changed the subclass to ConfigurationErrorsException from Exception. I think it...
What is a raw type and why shouldn't we use it?
... raw type.
A non-static member type of a raw type R that is not inherited from a superclass or superinterface of R.
Here's an example to illustrate:
public class MyType<E> {
class Inner { }
static class Nested { }
public static void main(String[] args) {
MyType mt;...
tomcat - CATALINA_BASE and CATALINA_HOME variables
...t on Ubuntu. It properly separates the Tomcat software (in $CATALINA_HOME) from the Tomcat instance (in $CATALINA_BASE).
– reinierpost
Jul 8 '16 at 8:52
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Easiest way to pass an AngularJS scope variable from directive to controller?
What is the easiest way to pass an AngularJS scope variable from directive to controller? All of the examples that I've seen seem so complex, isn't there a way I can access a controller from a directive, and set one of it's scope variables?
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Can unit testing be successfully added into an existing production project? If so, how and is it wor
...It can be done when you have both an accurate understanding and commitment from the parties involved.
First of all, it is important to understand that unit testing is a skill in itself. You can be a very productive programmer by "conventional" standards and still struggle to write unit tests in a w...
The static keyword and its various uses in C++
...e scope (i.e. outside of functions and classes), then it can't be accessed from any other translation unit. This is known as "internal linkage" or "static storage duration". (Don't do this in headers except for constexpr. Anything else, and you end up with a separate variable in each translation un...
How to grant remote access permissions to mysql server for user?
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This grants root access with the same password from any machine in *.example.com:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%.example.com'
IDENTIFIED BY 'some_characters'
WITH GRANT OPTION;
FLUSH PRIVILEGES;
If name resolution is not going to work, you may also ...
What is the difference between HTTP_HOST and SERVER_NAME in PHP?
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The HTTP_HOST is obtained from the HTTP request header and this is what the client actually used as "target host" of the request. The SERVER_NAME is defined in server config. Which one to use depends on what you need it for. You should now however rea...