xor vs or

PHP/*There are 4 bit operations in the *php, respectively, & and | or ^ XOR ~ Take counter & two bits are all 1, the result is that 1| has one for 1, the result is 1^ one is 0, one is 1, the result is 1~ take anti-0->1,1->01. The highest bit of the

* Complement of 13&7 13 00000000 00000000 00000000 00001101 7 00000000 00000000 00000000 00000111 13&7 00000000 00000000 0 0000000 00000101 = 5 5|4 5 Complement 00000000 00000000 00000000 00000101 4 Complement 00000000 00000000 00000000 00000100 5|4

**& bitwise AND, same as unchanged, otherwise all counted as 0| Bitwise OR,^ Bitwise XOR, not the same is counted as 1**PHP bitwise AND OR (^, &) operation is also a very common logic to determine the type, there are many new PHP novice may not be

Bitwise operations are operations that are performed in binary order. In system software, it is often necessary to deal with bits problems. The C language provides 6 bit operator operators. These operators can only be used for integer operands, that

Test instructions The number of only odd numbers in a set of numbers to ensure that only one number satisfiesKnowing a number with your own XOR equals 0 vs. 0 or equals yourself on the line#include using namespace Std;int main () { int n, t, ans;

thinkphp operator vs . SQL operator Table TP operator SQL operator Sample Example Actual query conditions eq = $map [' id '] = array (' eq ', 100); Equivalent to:$map [' id '] = +;

One, Java bit operation1. Presentation method:In the Java language, the binary number is represented by a complement, the highest bit is the sign bit, the sign bit for positive numbers is 0, and the negative is 1. The complement representation needs

PHP bit operations are not commonly used in PHP, but the role is quite large, let us introduce the PHP bit operation usage. $a & $b and (bitwise AND)$a | $b or (bitwise OR)$a ^ $b Xor (Bitwise XOR)~ $a not (bitwise non)$a $a >> $b shift

Statement: This article is intended for technical exchanges and is not intended for the "square" (the new version of the square educational administration system password processing method has also changed, just use this as an introduction ......)!

Here are some of my test results Array & Object Constructing When constructing arrays and objects, the new Array () and new object () are 3 times times slower than [] and {} Index Number type for Arrays Numeric index types for arrays Ist[int (0