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How to set up Spark on Windows?
...o choose a Spark pre-built package for Hadoop Spark download. Download and extract it.
Set SPARK_HOME and add %SPARK_HOME%\bin in PATH variable in environment variables.
Run command: spark-shell
Open http://localhost:4040/ in a browser to see the SparkContext web UI.
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Is it possible to read the value of a annotation in java?
...Retention(RetentionPolicy.RUNTIME)
public @interface TestAnnotation {
String testText();
}
And a sample annotated method:
class TestClass {
@TestAnnotation(testText="zyx")
public void doSomething() {}
}
And a sample method in another class that prints the value of the testText:
M...
Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie
... methods are for(of course you can calculate themselves, but they save you extra work). For the record, the point in V1 would be (30, 30).
Hope this helps.
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.NET unique object identifier
...he object. I don't know of any way of converting this into anything like a string etc. The value of the reference will change during compaction (as you've seen), but every previous value A will be changed to value B, so as far as safe code is concerned it's still a unique ID.
If the objects involve...
How to avoid the need to specify the WSDL location in a CXF or JAX-WS generated webservice client?
...rk. What version of CXF? That sounds like a bug. You can try an empty string in there (just spaces). Not sure if that works or not. That said, in your code, you can use the constructor that takes the WSDL URL and just pass null. The wsdl wouldn't be used.
3) Just the limitations above.
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Get TFS to ignore my packages folder
...l be removed, I initially thought your suggestion was to just live with an extra '.' on the end.
– user170934
Jan 11 '16 at 16:22
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Difference between objectForKey and valueForKey?
...ndexes, it uses keys to differentiate between items. A key is an arbitrary string you provide. No two objects can have the same key (just as no two objects in an NSArray can have the same index).
valueForKey: is a KVC method. It works with ANY class. valueForKey: allows you to access a property us...
Difference between static memory allocation and dynamic memory allocation
...standard doesn't mandate that a stack is used). You do not have to reserve extra memory using them, but on the other hand, have also limited control over the lifetime of this memory. E.g: automatic variables in a function are only there until the function finishes.
void func() {
int i; /* `i` o...
Mockito: InvalidUseOfMatchersException
...exception went away. E.g. inside below Java class,
public class Foo {
String getName(String id) {
return mMap.get(id);
}
}
the method String getName(String id) has to be AT LEAST protected level so that the mocking mechanism (sub-classing) can work.
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What's the yield keyword in JavaScript?
...n
You have this end }) which you need to keep track of everywhere
All this extra function (err, result) jargon
Not exactly clear that you're doing this to assign a value to result
On the other hand, with yield, all of this can be done in one line with the help of the nice co-routine framework.
fu...