How to quickly learn a programming language

      I wanted to learn a language before , Always on b Stand and look for a teaching video from beginning to end . This learning method belongs to the training class Learning from , Although the learning is relatively systematic , But in the end, the knowledge you master is often those used in the project , Others may just remember a noun in retrospect . And the videos of this training class are often aimed at students with zero foundation , For those who have mastered a language before learning the new language , This method is too slow , It often appears that after reading a few sections of things, I feel like I can talk about them for a long time , Gradually, I have no patience to watch . After the previous lesson again and again , Now gradually summed up a set of ways to learn a language quickly .

      I've been studying in recent days Go Language . about Go The language is also relatively strange , To master this language quickly in a short time , I summarized the following experience .

      First of all, have a goal , What is the purpose of learning this language , It can't be a very general goal （ For example, to write code and improve personal skills ）. And a very precise target , For example, I learn Go, Just to use Go Language development a xx Back end projects for . I learned Python, Just to use Python Of Djongo/Flask Develop a xx Front and back end items of function , Or for xx Data analysis of . I learned Java, Is to write a with xx Functional Android app, Or to use SpringBoot To develop a xx The back end of the platform ……

        With a clear goal , It's much easier to learn . First of all, because you have a certain programming language foundation , Learning another language generally means that the grammar has changed , But the core programming idea is basically unchanged . After knowing the most basic grammar （ Such as ： How to define variables , Print log, Write condition control 、 Loop statement , Object-oriented syntax , Built in data structure ）, You can on LeetCode Brush a few lines on the easy To get familiar with grammar . The reason why I want to brush questions , The main reason is that the grammar used when brushing questions is often not particularly advanced grammar （ Because some advanced grammar will increase time / Spatial complexity ）, Only use basic grammar . Such grammar is more suitable for consolidating the foundation of the new language learned .

      After being familiar with basic grammar , You can come directly Learn the frameworks you need to accomplish your goals / Technology . For example, my goal is to use Go Language is the platform backend of a network disk system , Then I need to have a look Go How does language do the back end . Use by consulting Gin The framework is based on Go Language is the most widely used back-end framework , So you can look directly at Gin Official documents of , To get a general idea of how this framework works . How to use postman Visit and return hello world, How to view post Request the body carried by the request and handle it accordingly , How to use Gin To accept documents, etc . After understanding these things , You can find some on the Internet Gin Project practice course , If self-study ability is particularly strong , You can even go directly Github To find more basic Gin project .

      If we check and read online Gin During the actual combat tutorial , It depends not only on how others realize their functions , We should also think that the tutorial is written to meet other people's own needs , If I want to fulfill my own needs , How to draw inferences from one instance , How to write my own needs , Even in the process of learning , You can write your own requirements code locally . in the meantime , When you encounter grammar that you can't understand , You can check relevant grammar in Baidu at any time , Learn grammar while actually looking at the code , Efficiency is much higher than simply learning grammar , Because you learn with problems .