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How do I deep copy a DateTime object?

...or now assume DateTime is returned from some opaque API that I can't just call over again. For example, I have a function that handles orders that returns a DateTime which is when the customer can next place an order. Calling the function to create a copy produces side effects I don't want. ...
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How to get a list of all files that changed between two Git commits?

Due to bureaucracy, I need to get a list of all changed files in my repository for a report (I started with existing source code). ...
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SQL DROP TABLE foreign key constraint

If I want to delete all the tables in my database like this, will it take care of the foreign key constraint? If not, how do I take care of that first? ...
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There is no ViewData item of type 'IEnumerable' that has the key 'xxx'

...ntains a SelectList with the same name as your DropDownList i.e. "submarket_0", the Html helper will automatically populate your DropDownList with that data if you don't specify the 2nd parameter which in this case is the source SelectList. What happened with my error was: Because the table contai...
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Defining custom attrs

... to use an attr in more than one place I put it in the root element. Note, all attributes share the same global namespace. That means that even if you create a new attribute inside of a <declare-styleable> element it can be used outside of it and you cannot create another attribute with the sa...
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binning data in python with scipy/numpy

... The Scipy (>=0.11) function scipy.stats.binned_statistic specifically addresses the above question. For the same example as in the previous answers, the Scipy solution would be import numpy as np from scipy.stats import binned_statistic data = np.random.rand(100) bin_means = binned_stat...
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How to modify Github pull request?

...you need more commits You push c11,c21,c31 to b The pull request now shows all 6 six commits share | improve this answer | follow | ...
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How to get started on TDD with Ruby on Rails? [closed]

...the concepts (took testing classes in college), but I am not sure how to really use them yet since I never worked on a "real" TDD project. ...
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Object.watch() for all browsers?

...s answer I gave to a similar question works fine here) I have created a small object.watch shim for this a while ago. It works in IE8, Safari, Chrome, Firefox, Opera, etc. share | improve this answ...
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Random alpha-numeric string in JavaScript? [duplicate]

...'0123456789'; if (chars.indexOf('!') > -1) mask += '~`!@#$%^&*()_+-={}[]:";\'<>?,./|\\'; var result = ''; for (var i = length; i > 0; --i) result += mask[Math.floor(Math.random() * mask.length)]; return result; } console.log(randomString(16, 'aA')); console.log(rando...