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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
...his is very well explained in the ARC transition guide.
In your NSError example, the declaration means __strong, implicitly:
NSError * e = nil;
Will be transformed to:
NSError * __strong error = nil;
When you call your save method:
- ( BOOL )save: ( NSError * __autoreleasing * );
The compi...
How to call a parent class function from derived class function?
How do I call the parent function from a derived class using C++? For example, I have a class called parent , and a class called child which is derived from parent. Within
each class there is a print function. In the definition of the child's print function I would like to make a call to the ...
Where do “pure virtual function call” crashes come from?
...programs that crash on my computer with the error: "pure virtual function call".
8 Answers
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Find out time it took for a python script to complete execution
I have the following code in a python script:
8 Answers
8
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How can I create an object and add attributes to it?
...ant to make a "bunch class", a very simple one already exists in Python -- all functions can have arbitrary attributes (including lambda functions). So, the following works:
obj = someobject
obj.a = lambda: None
setattr(obj.a, 'somefield', 'somevalue')
Whether the loss of clarity compared to the...
Applying .gitignore to committed files
...wered Sep 23 '11 at 11:05
Matt BallMatt Ball
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Practical non-image based CAPTCHA approaches?
... That one is great. The link to the site is random.irb.hr/signup.php. Sometimes it's a lot easier
– Marcio Aguiar
Sep 11 '08 at 8:45
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Entity Framework - Code First - Can't Store List
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I wish this worked in .NET Framework & EF 6, it’s a really elegant solution.
– CAD bloke
Jul 23 '19 at 19:00
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SPAN vs DIV (inline-block)
...turn and have default margin.
Note that inline-block is not supported in all browsers. For instance in Firefox 2 and less you must use:
display: -moz-inline-stack;
which displays slightly different than an inline block element in FF3.
There is a great article here on creating cross browser inl...
What is the maximum amount of RAM an app can use?
...lets and high-resolution phones will tend to have higher values yet. For example, you will see devices with 48MB heaps, and I wouldn't be surprised if there are values higher than that.
How is it possible that apps exceed that limit?
You assume that the author of that app knows what (s)he is d...