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Pattern to avoid nested try catch blocks?

...exceptional circumstances. But to answer your question directly (assuming all the exception-types are the same): Func<double>[] calcs = { calc1, calc2, calc3 }; foreach(var calc in calcs) { try { return calc(); } catch (CalcException){ } } throw new NoCalcsWorkedException(); ...
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Efficient way to apply multiple filters to pandas DataFrame or Series

...s to apply several filters to a Pandas DataFrame or Series object. Essentially, I want to efficiently chain a bunch of filtering (comparison operations) together that are specified at run-time by the user. ...
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Should the hash code of null always be zero, in .NET

...code. Returning 0 or -1 for null, so long as you choose one and return it all the time, will work. Obviously, non-null hash codes should not return whatever value you use for null. Similar questions: GetHashCode on null fields? What should GetHashCode return when object's identifier is null? Th...
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Mac zip compress without __MACOSX folder?

... How might I do this recursively for all zip files? – Wowfunhappy Jun 27 '17 at 3:56 ...
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urllib2.HTTPError: HTTP Error 403: Forbidden

...Error, e: print e.fp.read() content = page.read() print content Actually, it works with just this one additional header: 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', share | ...
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Get loop counter/index using for…of syntax in JavaScript

...bj] of enumerate(myArray)) { console.log(i, obj); } demo If you actually did mean for…in – enumerating properties – you would need an additional counter. Object.keys(obj).forEach could work, but it only includes own properties; for…in includes enumerable properties anywhere on the pro...
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Why is Dictionary preferred over Hashtable in C#?

... For what it's worth, a Dictionary is (conceptually) a hash table. If you meant "why do we use the Dictionary<TKey, TValue> class instead of the Hashtable class?", then it's an easy answer: Dictionary<TKey, TValue> is a generic type, Hashtable is not. That me...
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How to sort an ArrayList in Java [duplicate]

...Fruit fruit) { //write code here for compare name } Then do call sort method Collections.sort(fruitList); share | improve this answer | follow ...
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Format numbers to strings in Python

...}.html'.format(**d) 'http://xxx.yyy.zzz/user/42.html' Like Python 2.6+, all Python 3 releases (so far) understand how to do both. I shamelessly ripped this stuff straight out of my hardcore Python intro book and the slides for the Intro+Intermediate Python courses I offer from time-to-time. :-) ...
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How to check an Android device is HDPI screen or MDPI screen?

... for nexus 6p i am getting 3.5 , which category will it fall into ? – Manohar Reddy Nov 16 '16 at 6:12 2 ...