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How to retrieve a single file from a specific revision in Git?
...w $REV:$FILE
git show somebranch:from/the/root/myfile.txt
git show HEAD^^^:test/test.py
The command takes the usual style of revision, meaning you can use any of the following:
branch name (as suggested by ash)
HEAD + x number of ^ characters
The SHA1 hash of a given revision
The first few (maybe ...
How do I run Asynchronous callbacks in Playground
...ate: NSDate())
usleep(10)
}
This pattern has often been used in Unit Tests which need to test async callbacks, for example: Pattern for unit testing async queue that calls main queue on completion
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Deleting a file in VBA
...
1.) Check here. Basically do this:
Function FileExists(ByVal FileToTest As String) As Boolean
FileExists = (Dir(FileToTest) <> "")
End Function
I'll leave it to you to figure out the various error handling needed but these are among the error handling things I'd be considering:
...
HashSet vs LinkedHashSet
...the most of the time we use Set structures for iterating.
Performance tests:
------------- TreeSet -------------
size add contains iterate
10 746 173 89
100 501 264 68
1000 714 410 69
10000 1975 552 69
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Cloning a MySQL database on the same MySql instance
...l -u <user name> <pwd> <new db>
e.g: mysqldump -u root test_db1 | mysql -u root test_db2
This copies test_db1 to test_db2 and grant the access to 'root'@'localhost'
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impr...
Android Fragment onClick button Method
...le savedInstanceState) {
return inflater.inflate(R.layout.fragment_test, container, false);
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
fComm = (FragmentCommunicator) activity;
} catch (ClassCastExcept...
log messages appearing twice with Python Logging
...t propagation take care of the rest.
So, if you want a custom handler on "test", and you don't want its messages also going to the root handler, the answer is simple: turn off its propagate flag:
logger.propagate = False
s...
performing HTTP requests with cURL (using PROXY)
...error when I run this command: curl -x, --proxy 122.72.2.200:80 mysite.com/test.php?id=1
– user873286
Feb 27 '12 at 22:52
63
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Null vs. False vs. 0 in PHP
...f them have a value in a boolean context, which (in PHP) is False.
If you test it with ==, it's testing the boolean value, so you will get equality. If you test it with ===, it will test the type, and you will get inequality.
So why are they useful ?
Well, look at the strrpos() function. It retur...
How do I convert an NSString value to NSData?
...
NSString* str = @"teststring";
NSData* data = [str dataUsingEncoding:NSUTF8StringEncoding];
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