dwyl/learn-elixir

How to see function calls?

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#116 创建于 2019年2月19日

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help wantedquestion

描述

When debuging a function it's often helpful to have a log of all the functions that are being called when running a specific functions. At the moment I'm using a lot of IO.inspect which is good but tedious when a lot of functions are called.

I think the dbg module of Erlang can be used to trace the function calls: http://erlang.org/doc/man/dbg.html

see also https://stackoverflow.com/questions/50364530/elixir-trace-function-call and https://stackoverflow.com/questions/1954894/using-trace-and-dbg-in-erlang/1954980#1954980

贡献者指南

技术栈
elixir
领域
developer experiencetooling
议题类型
documentation
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
2
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
basic elixirerlang dbg module
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
70
研究方向
The issue requests a guide on tracing function calls in Elixir, suggesting the use of Erlang's dbg module. The contributor should explore the dbg documentation and the provided StackOverflow links, then write a tutorial or documentation page for the dwyl/learn elixir repository. The guide should cover how to set up tracing, example usage, and interpreting output, and be placed in an appropriate section of the repo (e.g., a debugging guide).