Thinking logic of computer programs (51) and thinking 51
The previous section describes EnumMap. This section also describes the implementation class EnumSet for the Set interface of the enumeration type. Similar to EnumMap, there is a special implementation class for enumeration types, mainly because it can implement the Set interface very efficiently.
The implementation class HashSet/TreeSet of the Set in
Thinking logic of computer programs (91) and thinking 91
In the previous sections, we have discussed Java 7. From this section, we will discuss some features of Java 8, including:
Passing behavior code-Lambda expressions
Function-based data processing-stream
Combined asynchronous programming-CompletableFuture
New Date and Time API
In this section, we will first discuss Lambda expressions.
This section
1. Some traditional methods2. Generate a QR code image from the program code.3. Scan the generated QR code on your mobile phone and convert it to a py script.Preface
Writing scripts on the most mobile phone is a hard task. Although SL4A provides us with the API Quick insertion function, in addition, the elegant Python saves us the trouble of entering semicolons and parentheses, but it does not have intelligent awareness, no keyword completion, narrow buttons, and difficult to enter
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
commercial use, the software of the two structures will be compared from the commercial application perspective below.
1. Investment Cost Comparison
From the perspective of software costs, the B/S structure software is generally only one-time investment in the initial stage. For the group, it is beneficial to control softwar
Thinking logic of computer programs (36) and thinking 36
In the previous section, we introduced the basic concepts and principles of generics. In this section, we will continue to discuss generics and the wildcard concepts in generics. Wildcards have confusing and confusing syntaxes, but they are widely used in Java container classes. What is it? In this section,
Method One, the computer with the function
1, in the computer "start"-"Settings"-"Control Panel"-"Add or Remove Programs", find you uninstall software click Uninstall can.
Method Two, software with the deletion function
1, the use of
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
I. Introduction
With the continuous development of computer networks, hacking technology has become a technical force that cannot be ignored. Although most hackers target servers, the direct harm to most Internet users is not great. However, there is a kind of hacker programs called "Trojan Horse" that can install trojans on the server end of a common network client through deception and other means, so th
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 understan
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
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
, Git is suitable for simple software projects, typically some open source projects, such as the Linux kernel, busybox, etc.Instead, SVN excels at multi-project management.For example, you can store a bsp/design document/File system/application/Automation compilation script for a mobile project in an SVN repository, or a file system that stores 5 mobile projects in one SVN.The n (number of items) * m (Number of components) warehouse must be establishe
Thinking logic of computer programs (5), thinking Logic
Intuitive fact violations
The reason why a computer is called a "computing" machine is because it was invented mainly for computing. "computing" is of course its specialty. In everyone's impression, computing must be very accurate. But in fact, even in some basic decimal operations, the calculation results a
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 "task
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,
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
Weekend, looking at the expert system of the book, which has about the rules of the content, suddenly think, can imitate people's learning way to improve computer program computing ability?Imagine, a little child, he started nothing, first of all, you have to tell him what is the number, and then tell him what is to add, subtract, and then tell him
Weekend, looking at the expert system of the book, which has about the rules of the content, suddenly think, can imitate people's learning way to improve computer program computing ability?Imagine, a little child, he started nothing, first of all, you have to tell him what is the number, and then tell him what is to add, subtract, and then tell him
Microsoft TFS:Advantages:The Mission edition is a great place to take your needs and project progress, and it's more useful for small teams than Gantt charts.can be seamlessly engaged with VSDisadvantages: tfs the cost of personal consumption is relatively larger. tfs through complex seemingly powerful configuration management, the online as the entire project cycle of the normal, which in actual use caused great inconvenience. The whole system is implemented with ASP, and the browser accesses
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.