大约有 32,294 项符合查询结果(耗时:0.0638秒) [XML]

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cannot download, $GOPATH not set

...src/ contains e.g. github.com/youruser/x and github.com/youruser/y. That's what I do. People might have their reasons to do otherwise (company policy to keep projects apart?), but I can't speak to that. – twotwotwo Nov 7 '15 at 20:58 ...
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How does data binding work in AngularJS?

...e in value, then it fires the change event. The $apply() method, which is what you call when you are transitioning from a non-AngularJS world into an AngularJS world, calls $digest(). A digest is just plain old dirty-checking. It works on all browsers and is totally predictable. To contrast dirty-...
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Programmatically scroll a UIScrollView

...s topic is 9 years old and the actual straightforward answer is not here! What you're looking for is scrollRectToVisible(_:animated:). Example: extension SignUpView: UITextFieldDelegate { func textFieldDidBeginEditing(_ textField: UITextField) { scrollView.scrollRectToVisible(textFiel...
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What is the usefulness of `enable_shared_from_this`?

I ran across enable_shared_from_this while reading the Boost.Asio examples and after reading the documentation I am still lost for how this should correctly be used. Can someone please give me an example and explanation of when using this class makes sense. ...
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Applications are expected to have a root view controller at the end of application launch

...re the error was coming from precisely so I narrowed it down and found out what went wrong. It turns out that I was trying to change the display of a view before it actually came on screen. The solution was hence to move this code in the viewcontroller that was giving me trouble from - (void)viewDi...
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Which is more efficient: Multiple MySQL tables or one large table?

... on specific data collection of a single entity. (e) It is a possibility: what you thought as a single value data may turn out to be really multiple values in future. e.g. credit limit is a single value field as of now. But tomorrow, you may decide to change the values as (date from, date to, credi...
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Why is “copy and paste” of code dangerous? [closed]

...e). Have your boss read about the DRY principle (Don't Repeat Yourself). What you are describing sounds like the perfect use for libraries, where you share code and only keep it in one place. I would only ever copy-paste code if I intended to refactor it soon after - making sure I later on extrac...
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COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]

... don't use COUNT(1) for anything. It's a one-trick pony, which rarely does what you want, and in those rare cases is equivalent to count(*) Use count(*) for counting Use * for all your queries that need to count everything, even for joins, use * SELECT boss.boss_id, COUNT(subordinate.*) FROM boss...
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How can I access “static” class variables within class methods in Python?

...e in a base class or a subclass. Which do you want to refer to? Depends on what you're trying to do. Foo.bar would always refer to an attribute of the specified class--which might be a base class or a subclass. self.__class__.bar would refer to whichever class the instance is a type of. ...
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Mark parameters as NOT nullable in C#/.NET?

...re so useful. In C#, they are the default value of every reference type. What else would the default value be? What other value would a variable have, until you can decide what else to assign to it? What other value could we pave a freshly allocated array of references over with, until you g...