如何向lldb控制台中的对象发送消息？ [英] How to send a message to an object in lldb console?

问题描述

说我有指向一个对象' 0x20c28010 '的指针。如何在调试器控制台（lldb）中发送此消息？如： [0x20c28010 doSomething];

Say that I have the pointer to an object '0x20c28010'. How can I send this object a message in the debugger console (lldb)? As in: [0x20c28010 doSomething];

推荐答案

不返回任何东西，或返回一个你不关心的指针，整数或浮点类型，你可以这样做：

If the message doesn't return anything, or returns a pointer, an integer or a floating-point type that you don't care about, you can do this:

p (void)[0x20c28010 doSomething]

如果你关心返回类型，或者返回类型是 struct ，则需要转换为正确的返回类型。示例：

If you care about the return type, or the return type is a struct, you need to cast to the correct return type. Examples:

p (int)[0x20c28010 length]
p (float)[0x20c28010 scale]
p (CGPoint)[0x20c28010 origin]

如果消息返回指向Objective-C对象或Core Foundation类型，可以使用 po 打印返回对象的描述：

If the message returns a pointer to an Objective-C object or Core Foundation type, you can use po to print the returned object's description:

po [0x20c28010 doSomething]

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