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to simply declare the class and its properties.That's exactly what we mean when we say Kotlin concise.2. AvoidNullPointerExceptionNow we want to remind you of the greatest pain in many programming languages-null pointer exceptions. We can hardly imagine how many developers have been exposed to null pointers since Tony Holl invented it in 1965, while trying to make things easier.Sadly, we can't come back in time to prevent Tony from making this mistake. But with Kotlin, we can now easily escape

open the menu configuration options:In the right-hand menu of IDE Settings > appearance, select Theme > Darcula theme. IDE Settings refers to the global configuration of Webstorm.3. Color MatchingFrom Sublime text 3 turned to friends, the default color Monokia presumably very much like, in the webstorm you can still continue to use it, but the default is not the color, you need to add from the download.Open the Https://github.com/OtaK/jetbrains-monok

Google Android Studio Kotlin Development environment ConfigurationGoogle's recent developer conference announced that Kotlin become the first language of Android development, that is, the official Android language development, it can be seen that Google Kotlin attention, this article describes the Android Kotlin Development environment Configuration and sample programs under Studio.Because the landlord is a C + + programmer, not Java origin, also do not understand the mobile Android development,

practicality and efficiency, such as the Jake God of Square has been pushing Kotlin. Kotlin has at least 2 years of practice in applied production environments abroad (non-jetbrains in-house practical applications). In mobile development, Android programmers are always lucky compared to iOS programmers, because we have a lot of great tools (Android studio, etc.), and choosing Kotlin is the consistent way that Google provides developers with efficient

Import java.util.*;p ublic class systeminfo{public static void Main (string[] args) {Properties sp = System.GetProperties ();Enumeration E = Sp.propertynames ();while (E.hasmoreelements ()) {string key = (string) e.nextelement ();System.out.println (key+ "=" +sp.getproperty (key)); }}}Operation Result:"C:\Program Files\java\jdk1.8.0_144\bin\java" "-javaagent:c:\program Files\jetbrains\intellij idea 2017.2.2\lib\ Idea_rt.jar=62849:c:\program Files\

1. Project structureProject Address: Https://github.com/timscm/myblog.git2. Start the projectStart the project with Pycharm and enter debug mode:"D:\Program files\jetbrains\pycharm 2018.1.3\bin\runnerw.exe"C:\Python365\python.exe"D:\Program files\jetbrains\pycharm 2018.1.3\helpers\pydev\pydevd.py"--multiproc--qt-support=auto--client 127.0.0.1--port 51807--file d:/pycharm/myblog/manage.py runserver 8000Pydev

F-plateF:\Program Files (x86) \jetbrains\phpstorm 2016.1\lib\jetbrainscrack-2.6.0.jarLocate the installation path for Phpstorm, there are two files in the \ Bin directory PhpStorm.exe.vmoptions PhpStorm64.exe.vmoptionsOpen the last side of the file and add a line-javaagent:f:\program files (x86) \jetbrains\phpstorm 2016.1\lib\jetbrainscrack-2.5.6.jar followed by the patch path, Modify the save file to clos

. Integrated development Environment (IDE)A list of integrated development environments for C + + Appcode: Building an integrated development environment for Objective-c,c,c++,java and Java development on the JetBrains ' IntelliJ idea Platform Clion: Integrated development environment for cross-platform C/D + + from JetBrains Code::Blocks: Free c,c++ and FOR

-language compiler Online compilerOn-line compiler list for C + + Codepad: Online compiler/interpreter, a simple collaboration tool Codetwist: A simple online compiler/interpreter that you can paste in c,c++ or Java code, execute online and view the results Coliru: Online compiler/shell, support various C + + compilers Compiler Explorer: Interactive compiler for assembly output Compiling and executing C + + programs online on Compileonline:linux Ideone: An onlin

Comparison of Debuggers: Debugger list from Wikipedia GDB:GNU Debugger Valgrind: Memory debugging, memory leak detection, performance analysis tools. Integrated development Environment (IDE)A list of integrated development environments for C + + Appcode: Building an integrated development environment for Objective-c,c,c++,java and Java development on the JetBrains ' IntelliJ idea Platform Clion: Integrated developme

debugging, memory leak detection, performance analysis tools. Integrated development Environment (IDE)A list of integrated development environments for C + + Appcode: Building an integrated development environment for Objective-c,c,c++,java and Java development on the JetBrains ' IntelliJ idea Platform Clion: Integrated development environment for cross-platform C/D + + from JetBrains

organizations you know, such as google,apple,ibm,intel,arm,red Hat,twitter, and other educational institutions, such as China's Peking University, Ali recently applied to JCP Executive committee membership, it seems that the vote does not pass, the latest executive committee of two new members are arm and JetBrains.10) Microsoft has also been a major contributor to JCP and even Java, but the interests of the drive, want to expand Java, so as to break

Jacek Furmankiewicz is a senior developer/designer of the Canadian Compuware Company. He has 12 years of professional IT experience, covering Unix,powerbuilder,c#/microsoft net,java,php and Microsoft SQL Server and Oracle. One, IntelliJ idea 6.0.4 Suppliers JetBrains Website Www.jetbrains.com/idea Price $499.00 (plus $299.00 upgrade fee) Installation On the Windows platform, IDEA provides

Compileonline:linux Ideone: An online compiler and debugging tool that allows you to compile and execute your source code online, supporting more than 60 programming languages. DebuggerList of C + + debuggers Comparison of Debuggers: Debugger list from Wikipedia GDB:GNU Debugger Valgrind: Memory debugging, memory leak detection, performance analysis tools. Integrated development Environment (IDE)A list of integrated development environments for C + + Appc

and Java development on the JetBrains ' IntelliJ idea Platform Clion: Integrated development environment for cross-platform C/D + + from JetBrains Code::Blocks: Free c,c++ and FORTRAN integrated development environment CodeLite: Another cross-platform, free, C + + integrated development environment Dev-c++: Portable C/C++/C++11 integrated development environment Eclipse CDT: Full-featur

+ + Appcode: Building an integrated development environment for Objective-c,c,c++,java and Java development on the JetBrains ' IntelliJ idea Platform Clion: Integrated development environment for cross-platform C/D + + from JetBrains Code::Blocks: Free c,c++ and FORTRAN integrated development environment CodeLite: Another cross-platform, free, C + + integrated development environment

: Memory debugging, memory leak detection, performance analysis tools. Integrated development Environment (IDE) Appcode: Building an integrated development environment for Objective-c,c,c++,java and Java development on the JetBrains ' IntelliJ idea Platform Clion: Integrated development environment for cross-platform C/D + + from JetBrains Code::Blocks: Free c,c++ and FORTRAN integrate

Comparison of Debuggers: Debugger list from Wikipedia GDB:GNU Debugger Valgrind: Memory debugging, memory leak detection, performance analysis tools. Integrated development Environment (IDE)A list of integrated development environments for C + + Appcode: Building an integrated development environment for Objective-c,c,c++,java and Java development on the JetBrains ' IntelliJ idea Platform Clion: Integrated developme

Comparison of Debuggers: Debugger list from Wikipedia GDB:GNU Debugger Valgrind: Memory debugging, memory leak detection, performance analysis tools. Integrated development Environment (IDE)A list of integrated development environments for C + + Appcode: Building an integrated development environment for Objective-c,c,c++,java and Java development on the JetBrains ' IntelliJ idea Platform Clion: Integrated developme

1. Read and Write files #!/usr/bin/env python#-*-coding:utf-8-*-# @Time: 2018/1/25 20:49# @Author: zhouyuyao# @File: Demon write.py# pycharm 2017.3.2 (Community Edition) # Build #PC -173.4127.16, built on December, 2017# jre:1.8.0_152-release- 1024-b8 amd64# jvm:openjdk 64-bit Server VM by JetBrains s.r.o# Windows 10.0# Python 3.6.1 (V3.6.1:69C0DB5, Mar 21 201 7, 18:41:36) # [MSC v.1900-bit (AMD64)] on win32if __name__== ' __main__ ': filename = inp