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Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...terface, so this is not what's causing your task to fail. Now this doesn't mean that you can serialise an RDD with Spark and avoid NotSerializableException
Spark is a distributed computing engine and its main abstraction is a resilient distributed dataset (RDD), which can be viewed as a distributed...
Random “Element is no longer attached to the DOM” StaleElementReferenceException
...ons it's because your tests are poorly written. It's a race condition. Consider the following scenario:
WebElement element = driver.findElement(By.id("foo"));
// DOM changes - page is refreshed, or element is removed and re-added
element.click();
Now at the point where you're clicking the element...
Programmatically set the initial view controller using Storyboards
...ial view controller
Ensure all initial view controllers have a Storyboard ID.
In the storyboard, uncheck the "Is initial View Controller" attribute from the first view controller.
If you run your app at this point you'll read:
Failed to instantiate the default view controller for UIMainStoryboar...
Why should I avoid using Properties in C#?
...ng to the reader. He hates operator overloading: a + b doesn't necessarily mean simple addition. It may mean some hugely complicated operation, just like C# properties. It may have side effects. It may do anything.
Honestly, I think this is a weak argument. Both languages are full of things like th...
trying to align html button at the center of the my page [duplicate]
...ment without a wrapper. The only way is to use the body as a wrapper. This means everything gets centered. If you want non-centered elements, you'll have to provide wrapper elements for those. I don't think the extra div is worse than applying custom rules for navigation and other page elements that...
How to REALLY show logs of renamed files with git?
.... You put content in a git repository because the content as a whole has a meaningful history.
A file rename is a small special case of "content" moving between paths. You might have a function that moves between files which a git user might trackdown with "pickaxe" functionalitly (e.g. log -S).
O...
How do you test private methods with NUnit?
...s a "mapping" algorithm that happens in between the private and the public meaning if I were to Unit Test the public, it would actually be an integration test. In this scenario I think it trying to write the test points to a design problem in the code. in which case I should probably create a differ...
Why must wait() always be in synchronized block
... things wrong with it, where just because your thread quit waiting doesn't mean the condition you are looking for is true:
You can get spurious wakeups (meaning that a thread can wake up from waiting without ever having received a notification), or
The condition can get set, but a third thread m...
How can I get every nth item from a List?
...
Yes, I suppose it sort of depends what you mean by "nth," but your interpretation might be more common. Add or subtract from i to suit your needs.
– mqp
Mar 25 '09 at 17:39
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MySQL skip first 10 results
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select * from table where id not in (select id from table limit 10)
where id be the key in your table.
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