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This article mainly explains "how to choose static and dynamic languages in web development". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn how to choose static and dynamic languages in web development.

Dynamic VS static type

Dynamic languages are languages that do not need to be declared before variables are used, such as Python, Ruby, and PHP, which is allowed in dynamic languages like the following.

Num = 10

In a sense, this is a double-edged sword, because dynamic language type checking is during the run of the program, and there is no way to find the bug before the code runs. I know you can write tests, but you can't test anything. Here is an example, though not important.

Def get_first_problem (problems): for problem in problems: problam = problem + 1 return problam

Now if you are disturbed by some serious electronic music, an indentation error is easily ignored, the code is finished and deployed to a production environment, and bug comes one after another.

Remember, you are the one who can destroy bug in a production environment.

Static languages: variables need to be declared before use, and type checking is required when compiling. Languages including Java, C, C++ and so on are static languages.

Static int awesomeNumber; awesomeNumber = 10

There is a lot of debate about the increase in robustness and the reduction in the chance of runtime errors. The compiler can catch some annoying errors when you code, the method contract is strict, and the downside is heavy boilerplate code.

Weak type VS strong type

Weakly typed languages can cause philosophical problems such as the addition of the number 2 and the character "two", which is fine in weakly typed languages.

A = 2 b = "2" concatenate (a, b) / / Returns "22" add (a, b) / / Returns 4

Traditional languages will strictly restrict the occurrence of various transactions, such as the addition of characters and integers in strongly typed languages will lead to errors, as follows:

> > a = 10 > > b = 'ten' > a + b Traceback (most recent call last): File ", line 1, in TypeError: unsupported operand type (s) for +:' int' and 'str' > Thank you for reading. This is the content of" how to choose static and dynamic languages in web Development ". After studying this article, I believe you have a deeper understanding of how to choose static and dynamic languages in web development. The specific use situation still needs to be verified by practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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