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Get the short Git version hash
Is there a cleaner way to get the short version hash of HEAD from Git?
8 Answers
8
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How do I compile a Visual Studio project from the command-line?
...path. Either start the Visual Studio build environment and run your script from there, or modify the paths in Python (with os.putenv).
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seek() function?
...e.
It's important to note that its syntax is as follows:
fp.seek(offset, from_what)
where fp is the file pointer you're working with; offset means how many positions you will move; from_what defines your point of reference:
0: means your reference point is the beginning of the file
1: means yo...
What is the best (idiomatic) way to check the type of a Python variable? [duplicate]
...s if somebody passes a unicode string to your function? Or a class derived from dict? Or a class implementing a dict-like interface? Following code covers first two cases. If you are using Python 2.6 you might want to use collections.Mapping instead of dict as per the ABC PEP.
def value_list(x):
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How to design a database for User Defined Fields?
...define the data domains. Don't underestimate the performance hit resulting from on-the-fly data type conversion. Such
constraints also help RDBMS query
optimizers develop more effective
plans.
Should you ever need to use foreign
keys, built-in declarative
referential
integrity is rarely out-per...
Java Generics: Cannot cast List to List? [duplicate]
...t;? extends Tree> b1 = a1;
... because then you can only fetch things from b1, and they're guaranteed to be compatible with Tree. You can't call b1.add(...) precisely because the compiler won't know whether it's safe or not.
Have a look at this section of Angelika Langer's Java Generics FAQ fo...
How do I avoid capturing self in blocks when implementing an API?
...swer
Instead of accessing self directly, you should access it indirectly, from a reference that will not be retained. If you're not using Automatic Reference Counting (ARC), you can do this:
__block MyDataProcessor *dp = self;
self.progressBlock = ^(CGFloat percentComplete) {
[dp.delegate myAP...
Facebook access token server-side validation for iPhone app
...oken you want to verify, and ACCESS_TOKEN is your app's token that you got from step 1.
The debug endpoint basically dumps all information about a token, so it'll respond with something like this:
{
data: {
app_id: YOUR_APP_ID,
is_valid: true,
metadata: {
ss...
Is “Java Concurrency In Practice” still valid? [closed]
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Yes, it's still valid in my mind. There isn't big change in this area from 6 to 7. Fork-join is a new feature, which is very suitable for divide-and-conquer type of problems. But all the existing stuff inside the book, such as synchronization, volatile, servlet, are still very valid.
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Difference between static class and singleton pattern?
...h of static methods is that singletons can implement interfaces (or derive from useful base classes, although that's less common, in my experience), so you can pass around the singleton as if it were "just another" implementation.
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