golang – ArgCV

Snippets

Print All Structures in a Golang Package

The program is designed to traverse and analyze Go language source code within a specified package directory. It utilizes the go/parser and go/token packages to parse the abstract syntax tree (AST) of each Go file. The main functionality includes:

Parsing Package Files: The program reads and parses all Go files within a given directory, creating an AST for each file.
Identifying Struct Definitions: It searches through the AST to find all declarations of struct types.
Preserving Comments: The program retains comments that are associated with the struct definitions and their fields.
Formatting and Printing Structs: The struct types, along with their fields and associated comments, are formatted to resemble the original Go code. The program uses the go/format package to ensure that the output closely matches the syntax and style of handwritten Go code.
Output: The program outputs the struct definitions to the standard output (console), allowing users to see the struct types and associated comments in a readable format.

The program is invoked by running the main.go file with the -path flag set to the path of the Go package directory to be analyzed. The output can be used for documentation purposes, code reviews, or as a reference when working with existing codebases.

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By Yu, 3 months3 months ago

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Understanding the file structure of wav

Usually we use data[44:] to eliminate the header information of wav files, and then assume the rest data is PCM. This may not always be true. For the wav header of a PCMWAVEFORMAT, we can usually understand that a structure as follows is at the front, and then followed by Read more…

By Yu, 3 years2 years ago

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从源码编译 golang

首先下载 golang 的代码，可以从 https://golang.org/dl 或者中国的 mirror https://golang.google.cn/dl 下载最新的 go<version>.src.tar.gz. 然后开始编译就可以。

构建方法基本可以参考官方文档就可以。

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By Yu, 3 years2 years ago

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Go Proxy Configurations

To speed up our dependencies updating for golang, or prepare some patterns for our special libraries, we probably consider to use a proxy to speed it up.

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By Yu, 5 years2 years ago

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Gracefully shutdown a http server in golang

To gracefully shutdown a http server requires a few steps.

The http library's serving function will block over there when getting started, until we call http.Server.Close(). As for us, we can invoke the starting function in a goroutine, and call close in another one.

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By Yu, 6 years2 years ago

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Detect the exists of methods in golang

Suppose we are trying to process a few interfaces, but not sure does a specific function exists.

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By Yu, 6 years2 years ago

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Generate random bytes in golang

Need to generate a set of random bytes?

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By Yu, 6 years2 years ago

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Hou, a simple toolkit for Node.js

For the purpose of providing a web service to a Node.js project to users, we may require a small middleware to start an HTTP service to handle the HTTP requests.

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By Yu, 7 years2 years ago

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SIGR: Yet Another Simple SIGnal manageR

Signal plays an important role in communication with POSIX system.

For example, what if our code been killed, interrupted, hung on? Generally, the operation system (I am talking about BSD, Unix-like, POSIX system, same in the follow but will omitted), will not really "KILL" it, it will just send a kill signal with id to this process, the this process will process this signal later.

Here is a table to describe the id to default action.

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By Yu, 7 years2 years ago

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go实现快速排序

Go 是这两年出来的一门语言。比较稚嫩，但还是可以一玩。复习数据结构之余，顺手写个快速排序--用go实现。 (more…)

By Yu, 12 years2 years ago