bitwise xor

JDK1.8 HashMap Source AnalysisSymbols used:^ XOR: Two operands are the same, the result is; two operands are different, the result is 1.& Bitwise AND: Two operands are 1, the result is 1.I. Overview of HASHMAPPrior to JDK1.8, HashMap was implemented

Today in a video learning C language operators, the video mentions assignment operations, relational operations, logical operations, trinocular operations, and the priority relationship between them. In order to satisfy my thirst for knowledge, I

First, data storageThe binary number is stored in the form of a complement in memory. The inverse code and the complement of the positive numbers are themselves. The inverse code for negative numbers is the same as the sign bit and the remaining

Directory of this document First, arithmetic operators Second, assignment operator The increment operator and the self-decrement operator Iv. sizeof Five, comma operator Vi. Relational operators Seven, logical

Condition 1 && Condition 2, if condition 1 is false, the condition 2 statement does not execute, because it can be judged that the expression is falseCondition 1 | | Condition 2, if condition 1 is true, the condition 2 statement does not execute

Operator precedence from high to low Priority Level operator Description Example Binding Nature 1 ()[]-.::++-- The parentheses operator that adjusts the precedenceArray Subscript access

Python Magic method written by netizens details: details Magic method Meaning The basic Magic Method __new__ (cls[, ...]) 1. __new__ is the first method that is called when an object is

PHP Encrypted decryption password transmissionPHP//encrypt with bitwise XOR OR OperationfunctionEncrypt$str) { $key=SHA1(' app '); return Base64_encode($str^$key);}//decrypting with bitwise XOR OR OperationfunctionDecrypt$encrypt _str) {

C-language operator precedence Priority level Operator Name or meaning Use form Combination direction Description 1 [] Array subscript array name [constant expression] Left to

One, the binary 1. What is a binaryL is a way of counting, a representation of a numberCount the number of squaresKanji: 20 binary: 112 binary: 10,118 in: 13L Multiple binary: decimal, binary, octal, hex. In other words, we have at least 4

Priority level Operator Describe Example Binding nature 1 () [] -> . :: + + -- Array subscript access operator operator that accesses a member through a pointer to an object operator that accesses

  Priority level Operator Name or meaning Use form Combination direction Description 1 [] Array subscript array name [constant expression] Left to right ()

The so-called bit operation, is to operate on a bit (bit) bits. In the section "Binary thought and data storage," the bit is an electronic component, and 8 bits form a byte, which is already the smallest operational unit of granularity. The C

original code, complement and inverse codeExample:-13, binary is-1101, using a byte to represent the original code: 10001101 complement: 11110011 anti-code: 11110010 Original Code Reverse code:The inverse code of a positive number is the same as the

On the logical shift, the arithmetic shift can be seen in the Thunder deep large part of the question. A problem. Previously seen in C + + standard, the behavior of the shift operator (>) out of bounds is not certain: The behavior is undefined if

Provides an operational expression in the following format: $ ((expression)) $ echo $ ((5* (3+3)) 30 $ result = $ (($myvar-10)) The shell provides a convenient number of conversions between: $ echo $ ((013)) #八进制 $ echo $ ((0xa4)) #十六进制 You can

Common operators and usage are as follows: operator name Description Example + Add Add two objects 3 + 5 gets 8. ' A ' + ' B ' gets ' ab '. - Reducing Get negative numbers or a

Copy CodeThe code is as follows: /* Operational symbol (PHP) operation symbol * * By operation symbol function is divided into: * One, arithmetic operator +-*/% + +- * Two, string operators. Connection operators * Third, assignment operator = + = = *

0. ARM Registers R13:sp R14:LR 1. Jump Instructions Jump instruction is used to implement the program flow jump, in the ARM program there are two ways to achieve the program flow jump:1) Use specialized jump commands.2) write the jump address value

Once the table structure in the database is established, the meaning of the data represented in the table is determined. By using the MySQL operator, you can get another data outside the table structure. For example, there is a birth field in the