java coding practice

of the indicators, and another indicator is how long it will take for a new colleague to deploy the entire system development environment after coming to the company. For example, I am a back-end programmer, I have to install a virtual machine, Nginx server, database, the language of the compilation environment, and run NPM installs to set up some front-end code base, these operations, coupled with domestic wonderful network problems, we usually spend half to one business day. Using

Gettwo () method to get the value of a field, A getsum () method is also provided to get the value of the sum.Here we notice that the algorithm in the Getsum () method is the addition of the values of one and two to return, but the way it obtains the values of one and two is also obtained through the Getters method, in fact, this is a completely unnecessary way, because Getsum () The method itself is a method inside the Calculate class, which is directly accessible to the encapsulated fields in

two = 2; public int getOne() { return one; } public int getTwo() { return two; } public int getSum() { return getOne() + getTwo(); }} As you can see, this is a calculate class, the function of this class is very simple, first one and two fields are encapsulated, and then provides the GetOne () method to get the value of the one field, provides the Gettwo () method to get the value of a field, A getsum () method is also provided to get the value of the sum.Here we notice that the algorit

Java coding specification, java Coding 1. Java Naming ConventionsIn addition to the following special cases, full English descriptors should always be used for naming. In addition, lowercase letters are generally used, but the class name, interface name, and the first letter

Baptism of the soul, practice python (3) -- expose coding problems, operating principles and syntax habits from a simple print code, pythonprint After the preliminary work is ready, you can open the IDE editor. You can select the built-in python IDLE or a third party. Here I use pycharm-an IDE dedicated to python. By convention, "hello, world" is required for printing the first python code in all developmen

Java Development specification summary_code coding specification, java Coding It is a good habit to gradually develop codes. 1. Basic Principles Mandatory principle:1. The StringBuilder must be used for string addition;2. try... Catch usage Try {} catch {Exception e. printStackTrace ();} finally {} // It Can Be Used in

The high-speed landing practice of Python Coding style guide Machine and human strengths, such as coding style Check this can be self-active work should be handed over to the machine, so this article helps you in a few minutes to achieve the coding style of self-active inspection. 1. What are the famous P

time of the encoding phase is relatively long in each phase before the transfer to integration. However, the progress at this stage is not well measured. We often see that the coding progress of a module quickly ranges from 0% to 90%, and then it takes two times to get from 90% to 100%. Failure to effectively know the progress of the project is the risk of the project. There is a good practice here for ref

the camera resolution is fixed, so there is a need to make some adjustments to calculate the correct scaling ratio.4. Set the scan box to squarepublicsynchronizedrectgetframingrect () { if (framingrect==null) { if (camera==null) { returnnull; } pointscreenresolution=configmanager.getscreenresolution (); if (screenresolution==null) {// calledearly,beforeinitevenfinished returnnull;} intwidth= Finddesireddimensioninrange (screenresolution.x,min_frame_width, max_frame_width); // Set the scan box

(assuming that the normal method is used).R804: Standard reservoir should not be used, except Std::arrayCause: Unpredictable (assumed to be implemented in a normal way).7. Key System PrinciplesR900: Increment and decrement operations cannot be used as sub-expressions.Example:int x=v[++i]; Violate++i;int x=v[i]; That's rightCause: It may be missed out.R901: Code should not rely on precedence rules under algorithm expression precedence.Example:X=a*b+c; That's rightExample:if (aCause: The co

menu as a reusable subsystemExperiment Report Experiment CodeExperience: The difficulty of this experiment lies in the understanding and use of liunx system function getoptLesson Eight: Design ideas behind the codeExperience: Learn from different quality perspectives, such as product perspective, user's perspective, and so on, the menu open source want someone to use it. This paper summarizes the design methodology and several important design guidelines, such as modularization, interface desig

Project in C ++ coding practice In the practice of C ++ programming, there are usually some defects that affect program performance, efficiency, and localization. Some of these defects are listed below for your reference, and give some suggestions on the defect correction, and give priority to the defect search based on the extent of the impact caused by the def

Java coding specifications 1.1 why coding standards are especially important for programmers, there are several reasons: 80% of the cost of a software life cycle is maintenance. Almost no software is maintained by the original developer throughout its lifecycle. Coding specifications can improve the readability of soft

::coutPrivateint m_j;A M_a;A M_b;Static A M_c;};int _tmain (int argc, _tchar* argv[]){b b (2);std::coutreturn 0;}The answer is 0101.This problem is very strange is also very good a problem, at first think the answer is certainly wrong, a run answer really is true ...This problem is mainly to examine the construction order of the class and the initialization order of the member variables.The first output 0 is because the constructor of the base class is called first, and the default parameter in

codeString Shijian = "";String AP = "";int shangwuxiawu = 0;String Wenhou = "";//InputConsole.WriteLine ("Please Enter Time:");Shijian = Console.ReadLine ();//Calculationshangwuxiawu = convert.toint32(Shijian); {The conversion of the data at this time is converted from a character to a number} Wenhou = shangwuxiawu>=0shangwuxiawuAP = shangwuxiawu>0shangwuxiawu{This is a time-based conversion that transforms the 24-hour system into a 12-hour system and adds a suffix ("AM", "PM")} OutputConsole.W

VIM has three modes: General mode, edit mode, command mode.-----------------------------------------------------------------------------------Packaging command: TAR-ZCVF name.tar.gz path_and_filesUnpacking command: TAR-ZXVF name.tar.gzParameters:-Z: With gzip properties-C: Create a parameter directive for a compressed file (the meaning of Create)-x: Unlock parameter directives for a compressed file-V: Show All procedures-F: Use the file name, remember that this parameter is the last parameter, c

Menu Applet v1.0 Internal Modular command-line menu applet V2.0 Implement command line menu applet with reusable list module V2.5 Implement command line menu applet with callback enhanced list module V2.8 Design the menu as a reusable subsystem Summarize:Rome is not built in a day, the program is not a time to write well, but in a slow iteration to modify, this is probably my biggest harvest.Seven weeks of learning, basic and Menu applet goes down from a simple applet, in a

used to evaluate the data itself with the correct category information using the ARI Ari indicator is similar to the method of calculating accuracy in the classification problem, while also taking into account the problem that the cluster cannot match the classification mark one by one② if the data being used for evaluation does not have a category, then we are accustomed to using contour coefficients to measure the quality of the clustering results. The contour factor also takes into account t

Java GBK, UTF-8 coding, javagbkutf-8 Coding Author: Qing Dujun Address: http://blog.csdn.net/qingdujun/article/details/41366301 1, GBK, UTF-8 Encoding Note: The default value is GBK encoding. Package io. dol. sn; import java. io. fileOutputStream; import java. io. IOExcept

Unified common coding methods and Java Web Coding Unified format: (UTF-8 is not required, but must be unified) JSP: Servlet: Request. setCharacterEncoding ("UTF-8"); // set the input encoding format. Response. setContentType ("text/html; charsetType = gb2312"); // you can specify the output encoding format. Database :/? UserUnicode = true characterE