![可可]( "可可")
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问题描述
在教程中对于可可的表编程，我被告知调用以下方法：
[[alert beginSheetModalForWindow：[searchField window]
modalDelegate：self
didEndSelector：@selector（alertDidEnd：returnCode：contextInfo :)
contextInfo：nil];
我在ruby中写了如下：
alert.beginSheetModalForWindow（self.window，
modalDelegate：self，
didEndSelector：：alertDidEnd，
contextInfo：nil）
当然， didEndSelector 部分是错误的。后来在我的代码中，我有一个方法alertDidEnd，它接受returnCode和contextInfo作为参数。当我看着 self.methods 我注意到该方法被列为 alertDidEnd：returnCode：contextInfo：。在上面的示例代码中，'@'用于标记选择器。这是在Macruby中用符号完成的，但在这种情况下，符号将包含冒号，这是不允许的。我应该如何将此方法名称表示为符号？
谢谢！
div class =h2_lin>解决方案如，符号与选择器桥接。所以你可以：
alert.beginSheetModalForWindow（self.window，
modalDelegate：self，
didEndSelector：：'alertDidEnd：returnCode：contextInfo：'，
contextInfo：nil）
In this tutorial for sheet programming in cocoa, I am told to invoke the following method:
[[alert beginSheetModalForWindow:[searchField window]
modalDelegate:self
didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:)
contextInfo:nil];
I have written this as follows in ruby,
alert.beginSheetModalForWindow(self.window,
modalDelegate:self,
didEndSelector: :alertDidEnd,
contextInfo:nil)
Of course, the didEndSelector part is wrong. Later in my code I have a method alertDidEnd, which takes returnCode and contextInfo as arguments. When I looked at self.methods I noticed that the method is listed as alertDidEnd:returnCode:contextInfo:. In the sample code above an '@' is used to mark the selector. This is accomplished in Macruby with a symbol, but in this case the symbol would contain colons, which is not allowed. How should I represent this method name as a symbol? I wasn't able to find this information on my own, where should I have looked that I didn't?
Thanks!
解决方案
As noted in the MacRuby docs, symbols are bridged with selectors. So you'd do:
alert.beginSheetModalForWindow(self.window,
modalDelegate:self,
didEndSelector: :'alertDidEnd:returnCode:contextInfo:',
contextInfo:nil)
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