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How to define servlet filter order of execution using annotations in WAR
...ation. However, to minimize the web.xml usage, it's sufficient to annotate all filters with just a filterName so that you don't need the <filter> definition, but just a <filter-mapping> definition in the desired order.
For example,
@WebFilter(filterName="filter1")
public class Filter1 ...
Does functional programming replace GoF design patterns?
...ve read a huge number of articles which insist that design patterns (especially in Java) are workarounds for the missing features in imperative languages. One article I found makes a fairly strong claim :
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Cache Invalidation — Is there a General Solution?
...ched value of b. If you chose 2 you must still check b every time but can fall back on the cache for a if b checks out.
If you layer caches you must consider whether you have violated the 'rules' of the system as a result of the combined behaviour.
If you know that a always has validity if b does...
Virtual functions and performance - C++
...e a very slight effect on performance, but it's unlikely to affect the overall performance of your application. Better places to look for performance improvements are in algorithms and I/O.
An excellent article that talks about virtual functions (and more) is Member Function Pointers and the Fastes...
How do I seed a random class to avoid getting duplicate random values [duplicate]
... be far from uniform distribution.
For the sake of completeness, if you really need to reseed a Random, you'll create a new instance of Random with the new seed:
rnd = new Random(newSeed);
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Haskell, Lisp, and verbosity [closed]
...y general that it never gets in your way, and somewhat surprisingly it actually "aids in achieving agility" (as you said) because when your program compiles you can be almost certain that is correct, so this certainty lets you try out things you might be otherwise afraid to try -- there is a "dynami...
Frame Buster Buster … buster code needed
... who may want to iframe your site just to take a peek at it, though not to allow use of it. Ideally, I think a screenshot of the site's homepage should be used, with some explanation of why it can't be used in the iframe overlaid on top.
– wheresrhys
Feb 11 '10...
Is there a way to auto-adjust Excel column widths with pandas.ExcelWriter?
...el reports. I am currently using pandas quite heavily for my data, so naturally I would like to use the pandas.ExcelWriter method to generate these reports. However the fixed column widths are a problem.
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Is there a destructor for Java?
...re is no direct equivalent of a destructor.
There is an inherited method called finalize, but this is called entirely at the discretion of the garbage collector. So for classes that need to explicitly tidy up, the convention is to define a close method and use finalize only for sanity checking (i.e...
How to delete files/subfolders in a specific directory at the command prompt in Windows
Say, there is a variable called %pathtofolder% , as it makes it clear it is a full path of a folder.
15 Answers
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