无法转换类型＆＃39; CFString＆＃39;的值预期参数类型＆＃39; UnsafePointer <void>＆＃39; （又名＆＃39; UnsafePointer＆lt;（）＆gt;＆＃39;）

Question

我在定义行

时遇到构建错误

 let runFont : CTFontRef = CFDictionaryGetValue(CTRunGetAttributes(run), kCTFontAttributeName)

错误是：无法转换类型＆＃39; CFString＆＃39;的值预期参数类型＆＃39; UnsafePointer＆＃39; （又名＆＃39; UnsafePointer＆lt;（）＆gt;＆＃39;）

Answer 1

尝试

let runFont = unsafeBitCast(CFDictionaryGetValue(CTRunGetAttributes(run), unsafeBitCast(kCTFontAttributeName, UnsafePointer<Void>.self)), CTFontRef.self)

Answer 2

Swift 3版@vadian回答：

cat file1.json | jq '.[] | select(.file_name | contains("197407"))'