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What is Bit Masking?
...es which bits you want to keep, and which bits you want to clear.
Masking is the act of applying a mask to a value. This is accomplished by doing:
Bitwise ANDing in order to extract a subset of the bits in the value
Bitwise ORing in order to set a subset of the bits in the value
Bitwise XORing i...
Understanding recursion [closed]
... major trouble understanding recursion at school. Whenever the professor is talking about it, I seem to get it but as soon as I try it on my own it completely blows my brains.
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Declaring variables inside or outside of a loop
...les should always be the smallest possible.
In your example I presume str is not used outside of the while loop, otherwise you would not be asking the question, because declaring it inside the while loop would not be an option, since it would not compile.
So, since str is not used outside the loop...
What is an invariant?
The word seems to get used in a number of contexts. The best I can figure is that they mean a variable that can't change. Isn't that what constants/finals (darn you Java!) are for?
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What is the Java equivalent for LINQ? [closed]
What is Java equivalent for LINQ?
34 Answers
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How to check if a map contains a key in Go?
...ill receive either the value of "foo" from the map or a "zero value" (in this case the empty string) and ok will receive a bool that will be set to true if "foo" was actually present in the map
evaluates ok, which will be true if "foo" was in the map
If "foo" is indeed present in the map, the body...
Difference between int[] array and int array[]
...syntax was only added to help C programmers get used to java.
int[] array is much preferable, and less confusing.
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Is there a “previous sibling” selector?
The plus sign ( + ) is for the next sibling.
17 Answers
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Detecting endianness programmatically in a C++ program
Is there a programmatic way to detect whether or not you are on a big-endian or little-endian architecture? I need to be able to write code that will execute on an Intel or PPC system and use exactly the same code (i.e. no conditional compilation).
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What's the fastest algorithm for sorting a linked list?
I'm curious if O(n log n) is the best a linked list can do.
13 Answers
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