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Why is there no logical xor in JavaScript?
Why is there no logical xor in JavaScript?
19 Answers
19
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Bitwise operation and usage
...lower 4 bits of an integer, you AND it with 15 (binary 1111) so:
201: 1100 1001
AND 15: 0000 1111
------------------
IS 9 0000 1001
The zero bits in 15 in that case effectively act as a filter, forcing the bits in the result to be zero as well.
In addition, >> and << are oft...
Swapping two variable value without using third variable
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Using the xor swap algorithm
void xorSwap (int* x, int* y) {
if (x != y) { //ensure that memory locations are different
*x ^= *y;
*y ^= *x;
*x ^= *y;
}
}
Why the test?
The test is to ensure that x an...
Find XOR of all numbers in a given range
... typically between 1 and 4,000,000,000 inclusive. You have to find out the XOR of all the numbers in the given range.
5 Ans...
What does (x ^ 0x1) != 0 mean?
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The XOR operation (x ^ 0x1) inverts bit 0. So the expression effectively means: if bit 0 of x is 0, or any other bit of x is 1, then the expression is true.
Conversely the expression is false if x == 1.
So the test is the same ...
Is it good practice to use the xor operator for boolean checks? [closed]
...said). Most humans would understand the first one easier if they know what xor is (which is pretty useful to know if you're in the field of computing...)
– Harold R. Eason
Nov 22 '13 at 20:53
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Best way to reverse a string
...'t need to mention unicode: chars in C# are unicode characters, not bytes. Xor may be faster, but apart from being far less readable, that may even be what Array.Reverse() uses internally.
– Nick Johnson
Oct 23 '08 at 13:18
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What is the purpose of XORing a register with itself? [duplicate]
xor eax, eax will always set eax to zero, right? So, why does MSVC++ sometimes put it in my executable's code? Is it more efficient that mov eax, 0 ?
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Fastest sort of fixed length 6 int array
...ures. I attempted testing on an AMD cpu but rdtsc isn't reliable on the X6 1100T I have available.
Clarkdale (i5-650)
==================
Direct call to qsort library function 635.14 575.65 581.61 577.76 521.12
Naive implementation (insertion sort) 538.30 135.36 134.89 240.62...
Creating a “logical exclusive or” operator in Java
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Java does have a logical XOR operator, it is ^ (as in a ^ b).
Apart from that, you can't define new operators in Java.
Edit: Here's an example:
public static void main(String[] args) {
boolean[] all = { false, true };
for (boolean a : all...