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Can I use Objective-C blocks as properties?
...sure they are declared as @property(copy). For example:
typedef void(^TestBlock)(void);
@interface SecondViewController : UIViewController
@property (nonatomic, copy) TestBlock block;
@end
In MRC, blocks capturing context variables are allocated in stack; they will be released when the stack...
What does enumerate() mean?
...l index next to each item of an iterable.
So if you have a list say l = ["test_1", "test_2", "test_3"], the list(enumerate(l)) will give you something like this: [(0, 'test_1'), (1, 'test_2'), (2, 'test_3')].
Now, when this is useful? A possible use case is when you want to iterate over items, and...
Is it valid to replace http:// with // in a ?
...myself on heavily trafficked sites and have had zero complaints. Also, we test our sites in Firefox, Safari, IE6, IE7 and Opera. These browsers all understand that URL format.
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Alternatives to gprof [closed]
...g for it to exit:
perf record ./a.out
This is an example of profiling a test program
The test program is in file main.cpp (I will put main.cpp at the bottom of the message):
I compile it in this way:
g++ -m64 -fno-omit-frame-pointer -g main.cpp -L. -ltcmalloc_minimal -o my_test
I use libma...
How to check a string for specific characters?
...nformation on strings, including about using the in operator for substring tests.
Update: This does the same job as my above suggestion with less repetition:
# When looking for single characters, this checks for any of the characters...
# ...since strings are collections of characters
any(i in '&l...
Python: reload component Y imported with 'from X import Y'?
...visual clues that the name's being looked up, ease of mocking/injecting in tests, ability to reload, ability for a module to change flexibly by redefining some entries, predictable and controllable behavior on serialization and recovery of your data [[e.g. by pickling and unpickling]], and so on, an...
Finding the source code for built-in Python functions?
...y
Modules/_<module>.c (if there’s also a C accelerator module)
Lib/test/test_<module>.py
Doc/library/<module>.rst
For extension-only modules, the typical layout is:
Modules/<module>module.c
Lib/test/test_<module>.py
Doc/library/<module>.rst
For buil...
How do I search for an object by its ObjectId in the mongo console?
...e matters) and that the ObjectId is exact.
Documentation is here
> db.test.insert({x: 1})
> db.test.find() // no criteria
{ "_id" : ObjectId("4ecc05e55dd98a436ddcc47c"), "x" : 1 }
> db.test.find({"_id" : ObjectId("4ecc05e55dd98a436ddcc...
“Pretty” Continuous Integration for Python
...check out Nose and the Xunit output plugin. You can have it run your unit tests, and coverage checks with this command:
nosetests --with-xunit --enable-cover
That'll be helpful if you want to go the Jenkins route, or if you want to use another CI server that has support for JUnit test reporting....
jasmine: Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL
...s function is complete. If you never call it, Jasmine will never know your test is done and will eventually timeout.
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