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NSString property: copy or retain?
...e caused some confusion (see robnapier.net/blog/implementing-nscopying-439#comment-1312). You are absolutely correct about NSString, but I believe you've made the point a bit too general. The reason NSString should be copied is that it has a common mutable subclass (NSMutableString). For classes tha...
Commenting multiple lines in DOS batch file
...To test this batch file I need to execute some lines only and want to hide/comment out remaining.
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What's wrong with using == to compare floats in Java?
According to this java.sun page == is the equality comparison operator for floating point numbers in Java.
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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
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There are two competing concerns: with less training data, your parameter estimates have greater variance. With less testing data, your performance statistic will have greater variance. Broadly speaking you should be concerned with dividin...
Why is using “for…in” for array iteration a bad idea?
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PHP 5: const vs static
...he value but the variable will only be initialized once. See stackoverflow.com/questions/203336/… for further explanation how to create a singleton. For me those are some situations in which I prefer static variables.
– Erik van de Ven
Jun 21 '16 at 9:07
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What is an initialization block?
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@Pacerier So you can have common code when having multiple constructors without having to use an init() method (which someone updating the class may forget to call it)
– pablisco
Aug 19 '16 at 10:28
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How to convert SecureString to System.String?
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Big-oh vs big-theta [duplicate]
It seems to me like when people talk about algorithm complexity informally, they talk about big-oh. But in formal situations, I often see big-theta with the occasional big-oh thrown in.
I know mathematically what the difference is between the two, but in English, in what situation would using big-oh...