xcode – 如何在调试时打印Swift结构的自定义描述,而不是其他内容？

概述假设我有一个像这样的结构： struct MyStruct: CustomStringConvertible { let myInt: Int let myString: String var description: String { return "my int is \(myInt),\nand my string is \"\(myString)\ 假设我有一个像这样的结构：

struct MyStruct: customstringconvertible {    let myInt: Int    let myString: String    var description: String {        return "my int is \(myInt),\nand my string is \"\(myString)\""    }}

从代码打印描述工作正常.

let myStruct = MyStruct(myInt: 3,myString: "hello")print(myStruct)

这导致了

my int is 3,and my string is "hello"

当我想从调试器打印myStruct的描述时出现问题. po myStruct导致

▿ my int is 3,and my string is "hello"  - myInt : 3  - myString : "hello"

明确地打印出它的描述也没有帮助,因为po myStruct.description结果

"my int is 3,\nand my string is \"hello\""

我认为它可能与CustomDeBUGStringConvertible有关,所以我添加了这段代码：

extension MyStruct: CustomDeBUGStringConvertible {    var deBUGDescription: String {        return description    }}

不幸的是,这根本不会改变任何结果.

有办法吗？

my int is 3,and my string is "hello"

调试时从命令行打印？

解决方法

(lldb) Expression print(myStruct)my int is 3,and my string is "hello"

你可以定义自己的’命令’

(lldb) help commandThe following subcommands are supported:      alias   -- Allow users to define their own deBUGger command                 abbreviations.  This command takes 'raw' input (no need to                 quote stuff).      delete  -- Allow the user to delete user-defined regular Expression,python or multi-word commands.      history -- Dump the history of commands in this session.      regex   -- Allow the user to create a regular Expression command.      script  -- A set of commands for managing or customizing script commands.      source  -- Read in deBUGger commands from the file <filename> and execute                 them.      unalias -- Allow the user to remove/delete a user-defined command                 abbreviation.

总结

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