大约有 15,461 项符合查询结果（耗时：0.0256秒） [XML]
Does java.util.List.isEmpty() check if the list itself is null? [duplicate]
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You're trying to call the isEmpty() method on a null reference (as List test = null;
). This will surely throw a NullPointerException. You should do if(test!=null) instead (Checking for null first).
The method isEmpty() returns true, if an ArrayList object contains no elements; false otherwise ...
How do you maintain development code and production code? [closed]
...have only the production ready code in the development branch, or should untested latest code be available in the development branch?
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Are loops really faster in reverse?
...pt loops really faster when counting backward? If so, why? I've seen a few test suite examples showing that reversed loops are quicker, but I can't find any explanation as to why!
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Best way to assert for numpy.array equality?
I want to make some unit-tests for my app, and I need to compare two arrays. Since array.__eq__ returns a new array (so TestCase.assertEqual fails), what is the best way to assert for equality?
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Testing service in Angular returns module is not defined
I am trying to run the default service unit test in my project (Taken from the Angular Seed project on GitHub), but I keep getting the error "module is not defined".
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“Use of undeclared type” in Swift, even though type is internal, and exists in same module
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For me, I encountered this error when my test target did not have some swift files that my app build target had in compile sources. It was very confusing because the 'undeclared type' was being used in so many other places with no problem, and the error seemed vag...
ASP.NET MVC: Unit testing controllers that use UrlHelper
...o it can do a redirection. I'm using Url.RouteUrl(..) and during my unit tests this fails since the Controller.Url parameter is not pre-filled.
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Get started with Latex on Linux [closed]
...orrect before you try and build your document output.
Create a file called test.tex and put some content in it, say the example from the LaTeX primer:
\documentclass[a4paper,12pt]{article}
\begin{document}
The foundations of the rigorous study of \emph{analysis}
were laid in the nineteenth century,...
How to synchronize a static variable among threads running different instances of a class in Java?
...nized static method. This synchronizes on the class object.
public class Test {
private static int count = 0;
public static synchronized void incrementCount() {
count++;
}
}
Explicitly synchronize on the class object.
public class Test {
private static int count = 0;
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How to remove all the null elements inside a generic list in one go?
...drew: according to MSDN, RemoveAll does not take null. I think I also have tested that. A comment makes sense though.
– Tobias Knauss
Jul 17 '16 at 11:25
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