define tachyon

recently in reading the JavaScript Advanced Program design, is a bit forgotten to read the content, it is intended to do some reading in the form of blog notes. Today is about Four ways to define objects in JavaScript, in addition to these four methods, there are factory methods to define objects, but given their simplicity and informality, this is not an introduction. compared to object-oriented l

the small knowledge point:1. The difference between #include 1-#include compiler is a reference to the header file .2) #include "" refers to the header file in the relative path of your program directory and invokes the header file in the project directory.2.typedef and define what is the specific difference:(1) #define是preprocessing instructions , in the compilation of preprocessing to make a simple repla

Defining constants is very simple The method is: The code is as follows Copy Code {$smarty. Const. The constant name you define} How do you define a variable? Define variables in Smarty. {* The following paragraph is equivalent to defining a variable within the template username*} The code is as follows C

Pre-defined constants in PHP: __file__ The script file name that is currently being processed. If used in a contained file, its value is the included file, not the file name that contains it. __line__ The current number of rows for the file being processed. Php_version Represents the current version of the PHP processor, such as: ' 3.0.8-dev '. Php_os The operating system name of the PHP processor, such as: ' Linux '. TRUE Truth FALSE False value You can

Asp.net| Control Preface Asp. NET user control is very powerful, in the Web form to call to believe that everyone will, if you want to give the user control to define attributes, then how to do? As long as you finish this article, you will be able to make a few attributes on your control. This article is not very suitable for beginners. NET friend, involves some object-oriented knowledge, if you do not understand this knowledge, please refer to the r

Label:Table of Contents Creating a MySQL foreign key MySQL foreign key support in database engines MySQL foreign keys and on UPDATE and on DELETE MySQL foreign Key Faq:how do I define a foreign key in MySQL? Answer:here ' s A quick example of how I typically define a foreign key in MySQL. Diving right into an example, here's the definition for a MySQL database table named that nodes

in a query statement, an error often occurs:SQL Foundation: ORA-00918: Error with column not explicitly defined. There are two kinds of situations currently encountered. The reason is: when the query statement, the query table (dataset) has the same field name, the query field can not be confirmed that the field is changed, errors that do not explicitly define the column are reported. First case:1. Single-table:For example, there are three fields in a

Value of Do{}while (0) When macro definition (#define) in C languageRecently found in the code of the new company everywhere used do{...} while (0), Google a bit, found that stack overflow early on a lot of discussion, summed up the discussion, coupled with their own understanding, do{...} while (0) the value is mainly reflected in:1. Increase the adaptability of the CodeThe following macro definition does not use do{...} while (0)#

In applications, define is often used to define common parameter information to increase program readability and reliability. In PHP, the constant name is a simple identifier, which cannot be changed during the execution period and is case sensitive by default. Constants are always capitalized. Note: The third parameter in define can be used to set whether the co

ArticleDirectory Introduction 1. Using a function 1.1. methods defined internally 1.2. Methods added to the prototype 2. Using Object literals 3. Singleton using a function Summary 3 ways to define a javascript classintroduction Javascript is a very flexible object-oriented language when it comes to syntax. in this article you can find three ways of defining and instantiating an object. even if you have already picked y

Original article link Try to use const and inline instead of # define It is also called: Try to use the compiler instead of preprocessing. Cause: (1) # Define aspect_ratio 1.653Pre-compileProgramAspect_ratioReplace 1.653When a compilation error occurs, only the 1.653But aspect_ratio cannot be tracked., Not easy to debug (2) # Define max (A, B) (a)> (B )? (

Document directory Link definition order Define a local link Style Define link StyleCSS provides specific tools for some special effects, which are called "pseudo classes ". The following describes the four pseudo classes that are often used to define link styles. They are: : Link : Visited : Hover : Active Because we n

increases the difficulty of project management. IBM Rational Unified Process is implemented to manage and distribute the entire project development process. It is browser-based, A Customizable software development process platform. It focuses on the software development industry-recognized Optimization Method and manages the allocation of different elements in the development process.　　 Generally, the default RUP can meet the needs of some users. Users can publish and use it simply by deleting

# DefineAndConstDifference Although they feel "almost" in use, what are their differences in implementation? See the following code: # Define T 13/* use # A constant defined by define T */ Int main () { Const int T = 13;/* a constant defined by const */ Int n = T;/* assign t to N */ Int M = T;/* assign t to M */ } 1.Difference: The biggest difference between const and #

[Code sea shell TC] Use View to define dynamic Class, sea shell tcPreface In TC, Persistent Class corresponds to Table. Define a Persistent Class. updatedb generates the corresponding table. In the development environment of TC, a corresponding username will generate a table under this username In the formal environment, because adm, su, and key are used, the corresponding table will be generated under thes

PHP uses array_fill to define multi-dimensional arrays. array_fill is multi-dimensional. PHP uses array_fill to define multi-dimensional arrays. array_fill this article describes how PHP uses array_fill to define multi-dimensional arrays. Share it with you for your reference. Specific Analysis: for example, PHP uses array_fill to

The Meaning of # # # in C++/C macro definition (define)# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # define.#是字符串化的意思, the # that appears in the macro definition is a string that is followed by a parameter;eg#define STRCPY__ (DST, SRC) strcpy (DST, #src)Strcpy__ (BUFF,ABC) equivalent to strcpy__ (buff, "abc")# #是连接符号, connect the paramet

First, #define宏定义1. Macro definition, like this is the macro definition: #define PI 3.14159;2. Macro Definition Format: Macro value #define Macro name is the macro to be defined, usually denoted by a meaningful name in uppercase, and the macro value is the constant represented by the macro. ；3. #define是预编译指令;4. The ess

After reading some frameworks, many of them use define to define many system parameters at the system core entrance. However, we recently see that some of them are defined in $ _ SERVER and even $ _ ENV. Although all functions can be implemented, I have been confused. What are the advantages of this definition? Or... after reading some frameworks, many of them use defin