tcl operators

label: Ar uses the SP Div code bs amp to learn php Objective: To Learn logical operators: Understand logical operators and use them ( | ). 4. Operators (4) logical operators

PHP Arithmetic Operators, php Arithmetic Operators PHP Arithmetic Operators Operator Name Description Instance Result X + y Add Sum of x and y 2 + 2 4 X-y Subtraction Difference between x and y 5-2 3 X * y Multiplication Product of x and y 5*2 10 X/y Division Vendor

Operator types (four classes)One, arithmetic operators:a:++--B: */% c: +-Note: 1. When doing a division, if two numbers are integers, the result is an integer, not a decimal.2. The above operations, if the two operands are not a type, will be automatically converted at the time of operation3. Order of operations: first operation a type, then B type, and finally C type (the following operators operate in the same order)Use of surplus (%):1. Can be used

Common Operators in Javascript (Operators)-basic tutorial in javascript basic tutorial in arithmetic Operators Operator Operator description Example Example + Addition X + y If x is an integer of 2, y is an integer of 5, x + y is equal to 7If x is the string "text1" and y is the string "fun ",X + y equals to "text1fun"

Use records of operators | in js, and js Operators These two operators are often used. They are always mixed and recorded... A () B (): If true is returned after a () is executed, B () is executed and the value of B is returned. If false is returned after a () is executed, then the entire expression returns the value of a (), and B () is not executed;A () | B (

Exercise caution when using the increment/Decrement Operators (C ++) and Decrement Operators Incrementing ++ and decimal operators-both seemingly and in use, they all feel simple and elegant, but there are uncontrollable traps in them, we must be careful to avoid uncontrollable situations due to incorrect usage. For example: x = 2 * x ++ * (3-++ x); assume th

2016-06-29+ addition operation-Subtraction* Multiplication/Division% modulus+ + self-add operation--Self-subtraction operation+ = Addition Assignment value-=*=/=%=1 Basic arithmetic operators Packagecom.java1995;/*** Basic arithmetic operators *@authorAdministrator **/ Public classTest { Public Static voidMain (string[] args) {//declaring 2 variables of type int intI1=7; inti2=2; System.out.println (

JAVA Relational operators and java Operators Common Relational operators: No. Relational operators Description 1 > Greater 2 Less 3 = Equal 4 ! = Not equal 5 > = Greater than or equal 6

Detailed description of the tuples and logical operators in Python, python Operators Python tuplesTuples are another data type, similar to List ).The tuples are identified. Internal elements are separated by commas. However, an element cannot be assigned a value twice, which is equivalent to a read-only list. #! /Usr/bin/python #-*-coding: UTF-8-*-tuple = ('abcd', 786, 2.23, 'john', 70.2) tinytuple = (123,

1, js in the | | Symbol:Method of Operation:As long as "| |" False in front, regardless of "| |" Followed by true or FALSE, return "| |" The value that follows.As long as "| |" Preceded by true, regardless of "| |" Followed by true or FALSE, return "| |" The preceding value.Summary: After the true pre-leave2, JS in the symbol:Method of Operation:As long as "" is preceded by false, whether "" is followed by true or false, the result will be returned to the value preceding "";As long as "" is pre

I. SHIFT operatorsThe shift operator is also for binary "bit", which mainly includes: Left shift operator ( The left shift operator is denoted by " The right-shift operator is denoted by the symbol ">>>", which is the number of bits specified to the right of the operator to the left of the operators, and 0 on the high, in fact the right shift n bits, which is equivalent to the nth of 2. The signed right-shift operator, denoted by the

One, join operatorsThe concatenation operation is to concatenate two expressions together, with the operator "" and "+", and if the operand is of type "String", then the two operators perform the same function, as shown in the following table: Operator Name Type Description + Plus connectors Binocular operator If the two operands are "string", the two operands are concatenated into a string, otherwise t

Introduction to the use of php ternary operators, php Operators When we write PHP, it is possible that if {...} else {...} most of them are used, but sometimes we can use the ternary operation in C to reduce the code! This article describes some tips and notes for using ternary computation in php development. For more information about the coders, see. Today, a netizen posted a question in the group, but i

In C,"|" And "" boolean operators are short-circuited, which is equivalent to the orelse and andalso operators of VB.The "|" and "" operators can be used not only for numerical operations, but also for Boolean operations. As a boolean operator, neither of them has the short circuit feature, which is equivalent to the OR and operator of VB.Note: In fact, other C s

Mysql common operators and functions and mysql Operators Create a data table first. Use test; create table 'employe' (emp_no int unsigned, emp_name varchar (30), emp_sex varchar (3), emp_age tinyint unsigned, sal double, history datetime ); insert into employee values (1, 'zhang san', 'male', 18,500 0, '2014-04-23 '), (2, 'Li si', 'male', 2012 0, '1970-05-23 '), (3, 'wang 5', 'male', 2013 0, '1970-04-21'),

Commonly used query operators and commonly used Linq Operators A total of more than 50 query operators are included in Linq, which are commonly used to differentiate between five types. Some of these five types are frequently used in project queries. However, the naming of the linq operator is very standard. It can be guessed from the literal meaning. Below we wi

20. C ++-"", "|" defects of logic overload operators, "," Analysis of comma overload operators, limit C "", "|" Logical overload operator Defects Everyone knows"", "|"Yes"Short Circuit" Function For exampleA = (0 B): Because the first operand0So it does not determine the content of B and directly executesA = 0 For exampleA = (-100 | B): Because-100Not 0So it does not determine the content of B and direc

C/C ++ common operators and operatorsArithmetic Operators Syntax Explanations A + B Addition (summation) 1 + 1... 2 + 2... 2.5 + 2. 5... and so on A-B Subtraction (subtraction) 5-2 .. A * B Multiplication (product) 2*5 A/B Division (molecular) 10/5 A % B Modulus (remainder) 9% 2 A ++ Then, auto-increment first participates i

JAVA if Condition Statement, switch multi-branch structure, and logical operators, switch operators I. if condition statements Example: Import java. util. role; public class Test {public static void main (String [] args) {role in = new role (System. in); System. out. println ("Enter the student's score:"); int num = in. nextInt (); if (num = 100) {System. out. println ("full score! ");} Else if (num> 60 nu

Just started to use C + + soon, feel the problem when the more annoying is the bit operator, before probably in a certain course, but in fact rarely used. Now review and tidy up.OR | |Not!With or not quite well understood.Bitwise operators: | ^With or different or Typical Applications of : Get a segment of a number, for example: Get the lower eight bits of an integerint A;A = a0xff;Or: Get the high eight bits of an integer:int A;A = a0xff00