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Why can't we have static method in a (non-static) inner class?
...s correct that the language designers could have allowed this. They would then have to carefully disallow any access to the implicit reference to the outer class in static methods of the non-static inner class. At this point, what is the value to this being an inner class if you cannot reference t...
Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
...ns "your pointers+metadata get moved around as fast as C". Not a big deal. Then why bother with Python at all? Go look at the function signatures in cblas and lapacke.
– cjordan1
Sep 22 '13 at 20:23
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round up to 2 decimal places in java? [duplicate]
...0.0. ) will become 395.03. I can see why as 395034 is nearest long that is then divided by 100. However I think generally people would expect the result as 395.04.
– Vishal Saxena
Oct 3 '18 at 15:46
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Git push error: Unable to unlink old (Permission denied)
...none of the solutions above worked for me. I deleted the offending folder. Then:
git reset --hard
Deleted any lingering files to clean up the git status, then did:
git pull
It finally worked.
NOTE: If the folder was, for instance, a public folder with build files, remember to rebuild the fil...
Git interoperability with a Mercurial Repository
...can do the latter using your package manager, or with easy_install hg-git. Then make sure the following is in your ~/.hgrc:
[extensions]
hggit =
You may see some references that talk about specifying the bookmarks extension here too, but that has been built into Mercurial since v 1.8. Here are s...
UIGestureRecognizer on UIImageView
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Check that userInteractionEnabled is YES on the UIImageView. Then you can add a gesture recognizer.
imageView.userInteractionEnabled = YES;
UIPinchGestureRecognizer *pgr = [[UIPinchGestureRecognizer alloc]
initWithTarget:self action:@selector(handlePinch:)];
pgr.delegate = self;
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SVN best-practices - working in a team
...re going to do formatting changes with existing code, do it first, commit, then add the new code/edit the code. Or add/edit first, commit, then do the formatting change. This way the diff on the add/edit actually makes sense and doesn't simply say "everything is different now!'.
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BroadcastReceiver with multiple filters or multiple BroadcastReceivers?
...roadcastReceiver that would receive multiple intents? Is it just a big if-then-else statement?
– gonzobrains
May 8 '13 at 23:01
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How to check if my string is equal to null?
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If myString is null, then calling myString.equals(null) or myString.equals("") will fail with a NullPointerException. You cannot call any instance methods on a null variable.
Check for null first like this:
if (myString != null && !mySt...
convert string array to string
...question already had a trailing space. If the space was not already there, then you would be correct, and using " " as a separator would make more sense.
– davidg
Jan 30 '11 at 6:36
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