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Why no love for SQL? [closed]
I've heard a lot lately that SQL is a terrible language, and it seems that every framework under the sun comes pre-packaged with a database abstraction layer.
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Check if all elements in a list are identical
...ckEqual3 must take a sequence input, typically concrete containers like a list or tuple.
checkEqual1 stops as soon as a difference is found.
Since checkEqual1 contains more Python code, it is less efficient when many of the items are equal in the beginning.
Since checkEqual2 and checkEqual3 always p...
Is R's apply family more than syntactic sugar?
...d performance over other looping functions (e.g. for). One exception to this is lapply which can be a little faster because it does more work in C code than in R (see this question for an example of this).
But in general, the rule is that you should use an apply function for clarity, not for per...
Are string.Equals() and == operator really same? [duplicate]
Are they really same? Today, I ran into this problem. Here is the dump from the Immediate Window:
8 Answers
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Declaring pointers; asterisk on the left or right of the space between the type and name? [duplicate
I've seen mixed versions of this in a lot of code. (This applies to C and C++, by the way.) People seem to declare pointers in one of two ways, and I have no idea which one is correct, of if it even matters.
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Difference between >>> and >>
What is the difference between >>> and >> operators in Java?
7 Answers
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When do you use the “this” keyword? [closed]
I was curious about how other people use the this keyword. I tend to use it in constructors, but I may also use it throughout the class in other methods. Some examples:
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Unable to import a module that is definitely installed
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In my case, it is permission problem. The package was somehow installed with root rw permission only, other user just cannot rw to it!
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Difference between clustered and nonclustered index [duplicate]
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You really need to keep two issues apart:
1) the primary key is a logical construct - one of the candidate keys that uniquely and reliably identifies every row in your table. This can be anything, really - an INT, a GUID, a string - pick what makes mos...
When do you use varargs in Java?
...t needs to deal with an indeterminate number of objects. One good example is String.format. The format string can accept any number of parameters, so you need a mechanism to pass in any number of objects.
String.format("This is an integer: %d", myInt);
String.format("This is an integer: %d and a ...