learn smalltalk programming language

programming languages use the functions of other languages to introduce new functions. Think about Java 8, C ++ 11, Python3, and PHP7. these are just a few examples. Because the code libraries of the top 10 popular languages are huge, users prefer to implement changes in the language, rather than using new programming languages. Top 20

to understand the control of the DOS window color changes, optimized the following, the final:GifSource: (150 rows or so to share the key source)The other options are the same. Source too much do not do too much paste copy, full version please download the full version to use.Small series of thinking:Finally looked at, their own computer is the mouse operation, so thought, learning the following C language graphics

in the 80 's or even 90, you also let me face so boring input and output interface?" I have a generation gap with you! I look forward to a richer and more appealing way of interacting.Oh, this question is well asked, C language also has graphics Ah, fully able to meet everyone's psychological and educational! Let's take a look at this program, very easy, that is, on the screen a period of time to get a sine wave!(see ppt ...)Is the effect of executio

in the 80 's or even 90, you also let me face so boring input and output interface?" I have a generation gap with you! I look forward to a richer and more appealing way of interacting.Oh, this question is well asked, C language also has graphics Ah, fully able to meet everyone's psychological and educational! Let's take a look at this program, very easy, that is, on the screen a period of time to get a sine wave!(see ppt ...)Is the effect of executio

language, you can also make up a Windows like operating system, and then sit in the office like Bill Getz to count your money; second, it is even the parent language of other programming languages, For example, the Java language is written in C language (how. Cow Bar. Third

programming environment. Rstudio can also opt for Eclipse-based architect (Http://www.openanalytics.eu/architect). If you need to install a graphical user interface (GUI), select either R-commander (http://www.rcommander.com/) or Deducer (http://www.deducer.org/pmwiki/index.php?n =main.windowsinstallation).Homework after class Install R and Rstudio. Install the RCMDR, Rattle, and deducer packages. As well as recommended or dependent pack

I have read several classic books carefully and repeatedly, and I have read them for a hundred times ". The advantage of C language learning is that these books basically cover all aspects of the C language programming field, and will not be as confused as C ++, even after reading a pile of books, there are still such difficult traps. 1. Reference Books I listed

I saw a post on the forum today: "Yes. I first came from the C language. If I had an electronic Foundation, I would like to develop hardware. Now I am working on C #, which is a bit like "tailism ", I don't know why, but I still feel the most calm when writing C ++. In fact, I use "classes" to put functions with similar functions into a class, then, it is not as direct as C functions. At the very beginning, when writing a program, we receive process-o

Today in the forum to see a post: " Yes, I came from the C language from the beginning, if there is an electronic basis, I would like to engage in hardware development, now engage in C #, a bit like" copycat ", basically do not know why, or write C + + when the heart is the most static, in fact, I now use" class ", is to put some functions similar functions together into a class, and then use, not as good as the C function directly, a start to write t

I. Introduction to Objects 1. Abstract procedure Alan Kay has summed up the first successful object-oriented language, and the five basic features of Smalltalk, one of the languages on which Java is based, which represent a purely object-oriented approach to programming 1) everything is Object . 2) the program is a collection of objects that tell ea

that the problem can be determined at compile time (compile). On the other hand, a policy that allows decisions to be made only at the time the program is run becomes a dynamic policy, or it is considered necessary to make a decision at run time (from "compilation Principle 2ed"). The focus of a language's dynamics is on compiling and running, and the differences that arise in the application scenario are closely related to the programmer's work: what you can do and when.History of Dynamic lang

Cosette. All of this is the key to functional programming. Here are some other reasons why JavaScript is a functional language: The lexical features of JavaScript include the ability to transfer functions as parameters, have type inference systems, support anonymous functions, high-order functions, closures, and so on. These features are critical to the structure and behavior of the constituent functional

the language of the use of the scene is mostly different, you can speak a language more than you can in a new field to do something new. Because at that time still holding "i will what can do what" Mentality. (i think programmers have three kinds of mentality about the ability of their programming technology to finish the product, one is "what can I do", the oth

Php Chinese network (www.php.cn) provides the most comprehensive basic tutorial on programming technology, introducing HTML, CSS, Javascript, Python, Java, Ruby, C, PHP, basic knowledge of MySQL and other programming languages. At the same time, this site also provides a large number of online instances, through which you can better learn

I feel that English is not a problem at all. I have to deal with junior high school English more than enough. But the special Mathematics makes me have a headache. I feel that my IQ is too low. I guess I can't even do it in elementary school mathematics, I also feel that Python is better than PHP... Why did my friends and friends say that PHP makes me learn PHP when I look for a job, and then I don't want to learn