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Why is Scala's immutable Set not covariant in its type?

...| edited Mar 24 '09 at 16:05 oxbow_lakes 127k5252 gold badges305305 silver badges442442 bronze badges an...
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How do you clear a stringstream variable?

...The clear() member function is inherited from ios and is used to clear the error state of the stream, e.g. if a file stream has the error state set to eofbit (end-of-file), then calling clear() will set the error state back to goodbit (no error). For clearing the contents of a stringstream, using: ...
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NSRange to Range

... range.length) from the referenced answer does crash in this case with the error message "fatal error: can not increment endIndex". – Martin R Jun 19 '15 at 5:38 8 ...
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Java rounding up to an int using Math.ceil

Why does it still return 4? 157/32 = 4.90625 , I need to round up, I've looked around and this seems to be the right method. ...
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Pick a random element from an array

...iple reasons, the main ones being that it doesn't work for slices, and its error prone). You can do let randomIndex = array.indices.randomElement(), followed by let randomElement = array.remove(at: randomIndex). You could even inline it to let randomElement = array.remove(at: array.indices.randomEle...
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Multiple aggregations of the same column using pandas GroupBy.agg()

...So either your example is something you typed in without checking for this error, or else Pandas breaks its own docs here. – ely Sep 26 '12 at 17:31 ...
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How to make an HTTP request + basic auth in Swift

...EncodingOptions.Type' does not have a member named 'fromMask'..This is the error I get in Xcode 6.1..Pls help..What is mask(0) – Bala Vishnu Oct 27 '14 at 10:18 2 ...
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Replace a string in a file with nodejs

... console.log('Modified files:', changedFiles.join(', ')); }) .catch(error => { console.error('Error occurred:', error); }); Asynchronous replacement with callback: replace(options, (error, changedFiles) => { if (error) { return console.error('Error occurred:', error); }...
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BeanFactory vs ApplicationContext

I'm pretty new to the Spring Framework, I've been playing around with it and putting a few samples apps together for the purposes of evaluating Spring MVC for use in an upcoming company project. So far I really like what I see in Spring MVC, seems very easy to use and encourages you to write classes...
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onMeasure custom view explanation

I tried to do custom component. I extended View class and do some drawing in onDraw overrided method. Why I need to override onMeasure ? If I didn't, everything seen to be right. May someone explain it? How should I write my onMeasure method? I've seen couple tutorials, but each one is a litt...