使用Swift从yaml块中删除行

Question

我的目标是从字符串变量中删除Yaml键和值，但是我失败了。

MWE

let testMe = """
--- 
# Metadata
title: hum
author: jecatatu
email: jecatatu@gmail.com
---
This is more text outside the yaml block
"""

目标是有一个字符串：

let testMe = """
--- 
# Metadata
title: hum
---
This is more text outside the yaml block
"""

到目前为止我的代码看起来像：

var email = "jecatatu@gmail.com"
let emailline = "email: " + email
let document:String = testMe.replacingOccurrences(of: emailline,  with: "")

问题

• 以上操作不起作用，即不从yaml块中删除电子邮件行，如何删除包含作者和电子邮件信息的整行？

Answer 1

如果您将以下内容放入Swift 4游乐场：

import UIKit

var testMe = """
---
# Metadata
title: hum
author: jecatatu
email: jecatatu@gmail.com
---
This is more text outside the yaml block
"""

var email = "jecatatu@gmail.com"
let emailline = "email: " + email
testMe = testMe.replacingOccurrences(of: "\n\(emailline)",  with: "")
print(testMe)

您将获得以下testMe版本：

---
# Metadata
title: hum
author: jecatatu
---
This is more text outside the yaml block

请注意作者行，您的目标不包括，但您的代码和问题也没有说明您要删除。希望这有帮助！