SEARCH KEYWORD -- Code writing


  Where Have You Installed Your Python Packages?

Preface I am writing this article because I recently noticed in the Python community that there are several frequently asked questions: Why does running the command after installing pip result in a "executable not found" error? Why does importing a module result in a "ModuleNotFound" error? Why can I run my code in PyCharm, but it doesn't work in the command prompt? Rather than just providing solutions, it is better to teach people how to fish. To address these types of issues, you need to und...

   PYTHON,PATH,PATH_PREFIX,PACKAGE LOCATION     2023-12-17 01:03:45

  Mastering a New Programming Language: A Professional Guide

Introduction Learning a new programming language can seem daunting, but with the right approach, anyone can become proficient in a new language. Whether you're a beginner or an experienced programmer, mastering a new language can open up new opportunities in your career and enable you to tackle new and exciting programming challenges. In this guide, we'll provide you with a step-by-step process for mastering a new programming language. Step 1: Choose a Language and Set Goals The first step in ma...

   PROGRAMMING,GUIDE,TIPS     2023-04-22 02:52:00

  How to handle ES6 modules in NodeJS

In modern JavaScript, there are two types of modules: ES6 module and CommonJS module used by NodeJS. These two types of module are not compatible. Many people would wonder how to load ES6 modules in their NodeJS project. This post will show how this can be done. Difference The syntax of the module being loaded is different. CommonJS modules are loaded with require() and exported with module.exports. ES6 modules are loaded and exported using import and export respectively. Merchanismwise require(...

   NODEJS,COMMONJS,ES6     2020-08-28 22:01:33

  Chrome extension to display desktop notification

Have you ever thought about writing extension for web browsers so that we can complete some tasks easily. Do you think writing extension for browsers is very difficult? You have no clue where to begin? On Chrome, this isn't any problem now as long as you know how to write HTML,CSS and JavaScript. We will show one example of Chrome extension today. The extension will display a desktop notification on your desktop. You need to create two files here, one is the notification.json which is the config...

   Chrome extension,Desktop notification,Example     2013-06-29 22:23:51

  A simple tutorial on Linux nohup command

In our daily work, there might be need to run some important program for hours or even days without being abruptly terminated. In such case, we may want to run the program with command nohup. nohup is the abbreviation of no hangup, i.e, don't hang up or terminate the process. This command will tell the process to ignore the system HUP signal. The HUP signal will be emitted when the terminal is exited or disconnected. Normally process will abort its execution when receiving this signal.  Bas...

   NOHUP,LINUX     2020-08-08 01:14:50

  combining dwarf failed: unknown load command 0x80000034 solution in GoLang

In case there is below error encountered while running some go program: combining dwarf failed: unknown load command 0x80000034 This may be due to that you are running go 1.16 on a Mac M! machine. If you go to check go version, it may tell you that you are running an arm version of go. go version go1.16.10 darwin/arm64 In such cases, you can try below methods to workaround the issue. Try to upgrade the go version to 1.17 and run the code again. If this is not an option for you because you have t...

   GO 1.16,0X80000034     2021-11-25 07:11:28

  Some lovely software design quotes

  Every time when I read technical books, I like reading the quote of a famous person at the start of a chapter(if any), usually they are very interesting. Here is a collection of famous quotes. Life’s too short to build something nobody wants – Ash Maurya, Running Lean author Give someone a program, you frustrate them for a day; teach them how to program, you frustrate them for a lifetime. – David Leinweber There are two ways of constructing a software design: One way is...

   Quote,Software design     2012-10-13 09:13:34

  Fix --go_out: protoc-gen-go: plugins are not supported

When generating RPC code using proto file template in GoLang, one may face the issue like below when running the command protoc. Error: exit status 1 Output: --go_out: protoc-gen-go: plugins are not supported; use 'protoc --go-grpc_out=...' to generate gRPC See https://grpc.io/docs/languages/go/quickstart/#regenerate-grpc-code for more information. Normally this issue is caused because the version of protoc-gen-go being used is not correct. One way to fix the issue is to follow the instructions ...

   GOLANG,PROTO BUFFER,PLUGIN     2021-07-09 03:41:11

  HeartBleed: Should C be blamed for the HeartBleed bug?

There is a discussion about the security of applications written in C on Hacker News recently after the report of HeartBleed bug in OpenSSL. In this discussion, some people are saying that the applications written in C are unsafe. It seems all or most of the faults should be laid on C. I think this is biased. The language itself should not be blamed.Safety is a relative term for programming languages. No language is absolutely safe. We claim some languages like Java and C# are safer than C/C++ b...

   C,HeartBleed,Analysis,Code review     2014-04-14 03:52:55

  Restore mocked variables in GoLang unit test

One of the guarding principles of writing unit test is that there should be no real external calls for dependant services. Unit test should run by its own and can run without issues on any environment including local, build, test environment. This indicates there should be some mock responses whenever an external call is needed so that different unit test scenarios can be covered. How can this be done in GoLang? In GoLang, anything can be assigned to a variable even including functions. A variab...

   GOLANG,UNIT TEST,MOCK FUNCTION,RESTORE MOCK     2021-12-10 20:43:00

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