大约有 9,000 项符合查询结果(耗时:0.0150秒) [XML]

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UIButton inside a view that has a UITapGestureRecognizer

I have view with a UITapGestureRecognizer . So when I tap on the view another view appears above this view. This new view has three buttons. When I now press on one of these buttons I don't get the buttons action, I only get the tap gesture action. So I'm not able to use these buttons anymore. What...
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How to copy data to clipboard in C#

How can I copy a string (e.g "hello") to the System Clipboard in C#, so next time I press CTRL+V I'll get "hello"? 5 Answ...
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“unrecognized selector sent to instance” error in Objective-C

...ted a button and added an action for it, but as soon as it invoked, I got this error: 38 Answers ...
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How to shut down the computer from C#

What's the best way to shut down the computer from a C# program? 16 Answers 16 ...
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Why does Math.round(0.49999999999999994) return 1?

In the following program you can see that each value slightly less than .5 is rounded down, except for 0.5 . 5 Answers ...
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Go > operators

Could someone please explain to me the usage of << and >> in Go? I guess it is similar to some other languages. ...
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“using namespace” in c++ headers

In all our c++ courses, all the teachers always put using namespace std; right after the #include s in their .h files. This seems to me to be dangerous since then by including that header in another program I will get the namespace imported into my program, maybe without realizing, intending or...
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How to get the instance id from within an ec2 instance?

How can I find out the instance id of an ec2 instance from within the ec2 instance? 32 Answers ...
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What is the right way to check for a null string in Objective-C?

I was using this in my iPhone app 20 Answers 20 ...
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How do I automatically sort a has_many relationship in Rails?

This seems like a really simple question but I haven't seen it answered anywhere. 5 Answers ...