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What is in your Mathematica tool bag? [closed]

We all know that Mathematica is great, but it also often lacks critical functionality. What kind of external packages / tools / resources do you use with Mathematica? ...
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When do items in HTML5 local storage expire?

...may run into space considerations. It's good to program defensively. Generally however things remain "forever" based on some practical definition of that word. edit — obviously, your own application can actively remove stuff if it decides it's too old. That is, you can explicitly include some so...
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UICollectionView inside a UITableViewCell — dynamic height?

...mic number of items, resulting in a height which must be calculated dynamically as well. However, I am running into problems trying to calculate the height of the embedded UICollectionView . ...
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How to convert a String to its equivalent LINQ Expression Tree?

...nking as a Where clause. If necessary, put it inside a list/array just to call .Where(string) on it! i.e. var people = new List<Person> { person }; int match = people.Where(filter).Any(); If not, writing a parser (using Expression under the hood) isn't hugely taxing - I wrote one similar (a...
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Unique Constraint in Entity Framework Code First

... Unless your app is single-user, I believe a unique constraint is one thing you can't enforce with code alone. You can dramatically reduce the probability of a violation in code (by checking uniqueness prior to calling SaveChanges()), but...
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py2exe - generate single executable file

... PyInstaller will create a single .exe file with no dependencies; use the --onefile option. It does this by packing all the needed shared libs into the executable, and unpacking them before it runs, just as you describe (EDIT: py2ex...
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Unable to verify leaf signature

... Note: the following is dangerous, and will allow API content to be intercepted and modified between the client and the server. This also worked process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = '0'; ...
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What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?

...e wchar_t is a distinct type whose values can represent distinct codes for all members of the largest extended character set specified among the supported locales (22.3.1).                                                              ...
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Application auto build versioning

... possible to increment a minor version number automatically each time a Go app is compiled? 6 Answers ...
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Multiple Updates in MySQL

...has new records then i will end up inserting only the ids and count except all other information. if and only if there is an entry for the id then it should update else it should skip. what shall i do? – Jayapal Chandran Aug 30 '10 at 13:30 ...