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Static variables in member functions
...ffect the same i and lifetime of i will remain through out the program. To add an example:
A o1, o2, o3;
o1.foo(); // i = 1
o2.foo(); // i = 2
o3.foo(); // i = 3
o1.foo(); // i = 4
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Why does the MongoDB Java driver use a random number generator in a conditional?
...lt;= 0.1)
return res;
The commit that originally introduced this logic had
if (_ok == true) {
_logger.log( Level.WARNING , "Server seen down: " + _addr, e );
} else if (Math.random() < 0.1) {
_logger.log( Level.WARNING , "Server seen down: " + _addr );
}
—another example of incompeten...
Running a Haskell program on the Android OS
Forenote: This is an extension of the thread started on /r/haskell
6 Answers
6
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Elastic search, multiple indexes vs one index and types for different data sets?
...mbination of data models from 2 or more indices is going to generate overhead, because the query will have to be sent to more shards across indices, compiled and sent back to the user.
Not recommended if your data set is small since you will incur more storage with each additional shard being create...
How can I know which parts in the code are never used?
...les are unused (or used but in no meaningful way, like written but never read)
the global one: functions that are never called, global objects that are never accessed
For the first kind, a good compiler can help:
-Wunused (GCC, Clang) should warn about unused variables, Clang unused analyzer has...
How do I find Waldo with Mathematica?
...on
pos = Dilation[ColorNegate[Binarize[corr, .12]], DiskMatrix[30]];
I had to play around a little with the level. If the level is too high, too many false positives are picked out.
Finally I'm combining this result with the original image to get the result above
found = ImageMultiply[waldo, I...
Should 'using' directives be inside or outside the namespace?
... double d = Math.PI;
}
}
}
Now imagine that someone adds another file (File2.cs) to the project that looks like this:
// File2.cs
namespace Outer
{
class Math
{
}
}
The compiler searches Outer before looking at those using directives outside the namespace, so it...
In a PHP project, what patterns exist to store, access and organize helper objects? [closed]
...leton implementation, I still think Flavius got it wrong. Global state is bad. Note that such solutions also use difficult to test static methods.
I know a lot of people do it, approve it and use it. But reading Misko Heverys blog articles (a google testability expert), rereading it and slowly dige...
What are the benefits of learning Vim? [closed]
... info on vi/vim tips and especially the article Why, oh WHY, do those nutheads use vi? (archived version)
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edited Nov 9 '16 at 10:01
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How do Python functions handle the types of the parameters that you pass in?
...
Lukas
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answered Mar 22 '10 at 2:33
Alex MartelliAlex Martelli
...