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Using -performSelector: vs. just calling the method
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were it something a little more complicated, like:
(void)doSomethingWithMyAge:(NSUInteger)age;
things would get complicated, because
[object doSomethingWithMyAge:42];
can no longer be called with any variant of "performSelector", because all variants with parameters only accept object par...
Is it bad practice to have a constructor function return a Promise?
... with all the benefits that has.
What if I want to execute things from my constructor?
That should go in a method of your class. You want to mutate global state? Then call that procedure explicitly, not as a side effect of generating an object. This call can go right after the instantiation:
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Difference between Grunt, NPM and Bower ( package.json vs bower.json )
I'm new to using npm and bower, building my first app in emberjs :).
I do have a bit of experience with rails, so I'm familiar with the idea of files for listing dependencies (such as bundler Gemfile)
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Why XML-Serializable class need a parameterless constructor
...ing an empty
instance of an immutable type serves
no purpose.
I have my own serialization engine, but I don't intend making it use FormatterServices; I quite like knowing that a constructor (any constructor) has actually executed.
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Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
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Nice that you mention retooling. My web host, for example, has a choice between Python 2.4 and 2.5; and a "major producer of entertainment software" near me is using 2.6 with no plans to upgrade soon. Sometimes it can be a major, costly effort to even disco...
Update Item to Revision vs Revert to Revision
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OK so say I update to revision and my working copy is out of data. Nothing is stopping me from changing the files. What if I change one of the files and try to commit it. Im guessing subversion is going to see the conflict and force me to merge the latest ver...
What are the differences between git remote prune, git prune, git fetch --prune, etc
My situation is this... someone working on the same repo has deleted a branch from his local & remote repo...
4 Answers
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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
...ective comment to the question and hope he or she will clear things up. If my suspicion is correct, the OP would expect something like Object reference obtained from AnyObject.GetANullObject() not set to an instance of an object. as the error message.
– O. R. Mapper
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How to overload functions in javascript?
...ents or required qty of arguments, you can just have one implementation of myFunc() that can adapt to what arguments were passed to it by checking the type, presence or quantity of arguments.
jQuery does this all the time. You can make some of the arguments optional or you can branch in your funct...
Does const mean thread-safe in C++11?
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@Ben Voigt: It is my understanding that the C++11 specification for std::string is worded in a way that already forbids COW. I don't remember the specifics, though...
– K-ballo
Jan 2 '13 at 19:18
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