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Reverse a string in Python

... longstring) ] duration_list = {} for func, name, params in functions: durations = timeit.repeat(lambda: func(params), repeat=100, number=3) duration_list[name] = list(np.array(durations) * 1000) print('{func:<20}: ' 'min: {min:5.1f}...
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What's the best way to validate an XML file against an XSD file?

... The Java runtime library supports validation. Last time I checked this was the Apache Xerces parser under the covers. You should probably use a javax.xml.validation.Validator. import javax.xml.XMLConstants; import javax.xml.transform.Source; import javax.xml.transf...
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an htop-like tool to display disk activity in linux [closed]

I am looking for a Linux command-line tool that would report the disk IO activity. Something similar to htop would be really cool. Has someone heard of something like that? ...
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What are the differences between a UIView and a CALayer?

...oth have most of the same attributes, both support different kind of animations, both represent different data. What are the differences between a UIView and a CALayer? ...
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Does Dispose still get called when exception is thrown inside of a using statement?

In the example below, is the connection going to close and disposed when an exception is thrown if it is within a using statement? ...
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Virtual functions and performance - C++

In my class design, I use abstract classes and virtual functions extensively. I had a feeling that virtual functions affects the performance. Is this true? But I think this performance difference is not noticeable and looks like I am doing premature optimization. Right? ...
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Set Locale programmatically

... the app's locale to the one specified by the given String. * * @param context * @param localeSpec a locale specification as used for Android resources (NOTE: does not * support country and variant codes so far); the special string "system" sets * ...
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How to use WeakReference in Java and Android development?

...n background. @Override protected Bitmap doInBackground(Integer... params) { data = params[0]; return decodeSampledBitmapFromResource(getResources(), data, 100, 100)); } // Once complete, see if ImageView is still around and set bitmap. @Override protected vo...
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How to “set a breakpoint in malloc_error_break to debug”

I'm getting lots of console outputs like this without my application crashing: 5 Answers ...
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How do I vertically center UITextField Text?

...s has potentially got several complicating factors, some alluded to in previous answers: What you're trying to align (just numbers, just letters, just uppercase letters or a mix) Placeholders Clear button What you're trying to align is important because of which point in the font should be verti...