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performSelector may cause a leak because its selector is unknown
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Solution
The compiler is warning about this for a reason. It's very rare that this warning should simply be ignored, and it's easy to work around. Here's how:
if (!_controller) { return; }
SEL selector = NSSelectorFromString(@"someMethod");
IMP imp = [_controller methodForSelector:...
Is a Java string really immutable?
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String is immutable* but this only means you cannot change it using its public API.
What you are doing here is circumventing the normal API, using reflection. The same way, you can change the values of enums, change the lookup table used in Integer autoboxing etc.
Now, the reason ...
Explicitly calling return in a function or not
... Urbanek from the R core team (I believe) for recommending a user to explicitly calling return at the end of a function (his comment was deleted though):
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Manually adding a Userscript to Google Chrome
...tead of "installing" User-Scripts I found many tutorials on the web to add it manually. All of them told me to do the same steps:
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What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
It seems that many projects slowly come upon a need to do matrix math, and fall into the trap of first building some vector classes and slowly adding in functionality until they get caught building a half-assed custom linear algebra library, and depending on it.
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How to use Elasticsearch with MongoDB?
I have gone through many blogs and sites about configuring Elasticsearch for MongoDB to index Collections in MongoDB but none of them were straightforward.
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Are soft deletes a good idea? [duplicate]
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I say it's a bad idea, generally (with some exceptions, perhaps).
First, your database should be backed up regularly, so you should never be in a situation where you would lose data permanently because of a DELETE (unless it's a...
How Scalable is SQLite? [closed]
I recently read this Question about SQLite vs MySQL and the answer pointed out that SQLite doesn't scale well and the official website sort-of confirms this , however.
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Why are arrays of references illegal?
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Answering to your question about standard I can cite the C++ Standard §8.3.2/4:
There shall be no references to references, no arrays of references, and no pointers to references.
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Is it wrong to place the tag after the tag?
How wrong is it to place the script tag after the closing tag of the body ( </body> ). ?
8 Answers
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