Document directory
Multi-line and single-line JS Console
Extended reading: Interpreter and Compiler
Interactive Language
Test in the Javascript Console
Test in ironscheme
I recently read the construction and interpretation of computer programs (the second edition of the original book) and learned about the library Programming Language LISP dialect scheme. This non-mainstream programming language de
Thinking logic of computer programs (60) and thinking Logic
Section 57 introduces byte streams, and section 58 introduces byte streams. They all read and write files in the stream mode. There are several restrictions on the stream mode:
Either read or write, not both read and write
Random read/write is not allowed. It can only be read from the beginning and end, and cannot be read repeatedly. Although pa
Thinking logic of computer programs (1), thinking LogicWhat is the program?
A computer is a machine that consists of CPU, memory, hard disk, and input/output devices. Operating systems run on the computer, such as Windows or Linux, and various applications, such as Word and QQ, run on the operating system.
The operatin
Thinking logic of computer programs (3), thinking Logic
Operation
The first section describes how to define data through variables. The last section describes how to assign values to data. With an initial value, you can perform operations on the data. A computer is called a "computing" machine because it is invented for computation. There are different types of o
MySQL Installation and startup services, as well as the problems encounteredMySQL version: mysql-5.7.13-winx64.zip (Install-free, unzip the program folder, such as C:\Program files\mysql-5.7.13-winx64): Http://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.13-winx64.zipProblems encountered:1. MySQL Service has been installed successfully, created an empty data folder, also filled in the initialization INI file, but could not start2. Cmd execution instruction "mysql-uroot-p" prompt: "error 2003
Efficient Desktop Connection: [automatically restore folders and programs before the computer is closed]
For many friends, daily boot work is only a continuation of the previous day, so the first thing every day is to restore the computer to the state when it was shut down the previous day. Is there any good way?Day-to-day manual recovery can be said to be time-
Part 8: bios and CMOS FAQs When it comes to bios, most cainiao don't know much about it and dare not try it easily, as if they are naturally afraid of the blue screen, even many old birds cannot distinguish BIOS settings from CMOS settings. Therefore, before writing a Q A question, I think it is necessary to clarify these two concepts to get twice the result with half the effort.BIOS is short for Basic Input/Output System. It is originally intended to be "Basic Input/Output System ". What we u
files, pictures, HTML files, compressed files and so on.Finally, for serialization, in addition to introducing the default serialization mechanism for Java, we also introduce XML, JSON, and Messagepack.SummaryThis section describes some of the basic concepts and common sense of files, the basic thinking and class structure of working with files in Java, and finally we summarize the following chapters to arrange the ideas.The file should look very simple, but actually contains a lot of content,
previous introduction is the flow, in addition to the flow, there are other ways of operation, such as random access and memory-mapped files, why do you need these methods? What are their characteristics? For what occasion? Let's move on to the next exploration.----------------To be continued, check out the latest articles, please pay attention to the public number "old Horse Programming" (Scan the QR code below), from the introduction to advanced, in layman's words, Lao Ma and you explore the
together, may write less code, but if the use of improper, will make the understanding much more difficult.Operator PrecedenceA slightly more complex operation may involve multiple variables, and a number of operations, which is the first, which is the calculation? The programming language dictates the precedence of the different operators, some will be counted first, some will be counted later, and in most cases, this priority is consistent with our common sense understanding.But in some compl
Thinking logic of computer programs (66) and thinking 66
We mentioned two problems of multi-thread shared memory in the previous section. One is the race condition and the other is the memory visibility. we mentioned that one solution to these two problems is to use the synchronized keyword, this topic describes this keyword.
Usage
Synchronized can be used to modify the instance method, static method, and c
Thinking logic of computer programs (64) and thinking 64
For file processing, we introduced the stream method, section 57 introduced the byte stream, section 58 introduced the ghost stream, and also introduced the underlying file operation method, section 60 describes random read/write files, Section 61 Describes memory ing files, Object serialization/deserialization mechanisms, and section 62 describes Jav
Thinking logic of computer programs (14), thinking Logic
It is said that Tao shengyi has a second, second, and third life. If binary representation and operation are regarded as one, the basic data type is regarded as two, and the basic data type is regarded as three, then, the combination of classes and the inheritance introduced in the next section make the three born things.
In the previous section, we i
Thinking logic of computer programs (73) and thinking 73
In this section and the following sections, we will discuss the container classes in Java and package. This section describes two simple classes, CopyOnWriteArrayList and CopyOnWriteArraySet, and discusses their usage and implementation principles. Their usage is relatively simple. What we need to understand is their implementation mechanism: Copy-On-
Thinking logic of computer programs (13), thinking Logic
Class
In the previous section, we introduced the basic principles of function calling. In this section and the next sections, we will explore the world of classes.
Programs mainly involve data and operations on data. To facilitate understanding and operation, advanced languages use the data type concept. Di
URL, an organization code card, and so on.
Bundle Identifier: The program identifier, which is a flag that differs from other programs, is composed of Organization Identifier + Product Name.
Language: The programming language used in the project, choose c speech here.
4) Click "Next", save the file can enter the future project, as shown:650) this.width=650; "src=" http://c.biancheng.net/cpp/uploads/allimg/160308/1-16030Q45F4V8.jpg "style
1, directly click the "Start" menu, and then select the "Run" option, this time will pop up a dialog box, in which directly enter the "regedit" Word command, and then click Enter;
2. After the Registry Editor opens, locate the following HKEY_CURRENT_USER, Software, Microsoft, Windows, CurrentVersion, Policies, explorer options on the left, Then delete the subkey "Disallowcpl" below the option on the right;
3, resource management Reset, the "taskkill/f/im Explorer.exe Start Explorer.exe" c
control the memory, hard disk, and the like. These commands cannot be directly executed by the program to prevent malicious programs from damaging the system, this is a kind of protection for the CPU, and the loop 3 command can be directly called by anyone, and can be used as a user interface.
Programming:
Computer languages include interpreted and compiled languages.
Interpreted language: the source code
Thinking logic of computer programs (90) and thinking 90
Section 88 introduces the regular expression syntax. The previous section describes Java APIs related to regular expressions. This section discusses and analyzes some common regular expressions, including:
Zip code
Phone number, including mobile phone number and fixed phone number
Date and Time
ID card
IP address
URL
Email Address
Chinese cha
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