YAML八卦

2020-03-26

学以致用，最近要做Go单测，需要学习了解一下Golang。其实很早就有学的愿望。学不以致用，就没下文了。十年纪念中文版链接站点看到这一篇YAML入门：以创建一个Kubernetes deployment为例。对比一下这两个等价描述，优势就一目了然了。

---
apiVersion: v1
kind: Pod
metadata:
  name: rss-site
  labels:
    app: web
spec:
  containers:
    - name: front-end
      image: nginx
      ports:
        - containerPort: 80
    - name: rss-reader
      image: nickchase/rss-php-nginx:v1
      ports:
        - containerPort: 88

{
   "apiVersion": "v1",
   "kind": "Pod",
   "metadata": {
                 "name": "rss-site",
                 "labels": {
                             "app": "web"
                           }
               },
    "spec": {
       "containers": [{
                       "name": "front-end",
                       "image": "nginx",
                       "ports": [{
                                  "containerPort": "80"
                                 }]
                      },
                      {
                       "name": "rss-reader",
                       "image": "nickchase/rss-php-nginx:v1",
                       "ports": [{
                                  "containerPort": "88"
                                 }]
                      }]
            }
}

接触了很久，但没系统了解一下。官网溜达一圈，八卦如下——

YAML is a human friendly data serialization standard for all programming languages.
2001年5月12号发布第一版本，最早的讨论在Yahoo Group，现在已经连接失效了
创世人包括Oren Ben-Kiki，Clark Evans和Ingy döt Net
名字来源类似GNU的定义，YAML Ain’t Markup Language
官方推荐使用.yaml结尾命名文件，目前大家似乎更多使用.yml
因为tab键的实现不同，yaml采用空格方式进行描述
官方网站about保留了更多信息
YAML正式文档目前是第三版，final YAML 1.2
几乎所有主流语言都有对应的实现支持

yaml reference card

这个首页包含各个语言对yaml文件的支持项目

About:

YAML(tm) is an international collaboration to make a data serialization language which is both human readable and computationally powerful. The founding members of YAML are Ingy döt Net (author of the Perl module Data::Denter), Clark Evans, and Oren Ben-Kiki. YAML emerged from the union of two efforts. The first was Ingy döt Net’s need for a serialization format for Inline, this resulted in his Data::Denter module. The second, was the joint work of Oren Ben-Kiki Clark Evans on simplifying XML within the sml-dev group. YAML was first publicized with a article on 12 May 2001. Oren and Clark’s vision for YAML was very similar to Ingy’s Data::Denter, and vice versa, thus a few days later they teamed up and YAML was born.

YAML Ain’t Markup Language