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How do I rename a column in a SQLite database table?
...has been asked on stackoverflow previously, but it was for SQL in general, and the case of SQLite was not mentioned.
15 Ans...
Preserving order with LINQ
...ts, but the elements which are returned will be in the same order.
If you convert to a different data structure, e.g. with ToLookup or ToDictionary, I don't believe order is preserved at that point - but that's somewhat different anyway. (The order of values mapping to the same key is preserved for...
How do you dynamically add elements to a ListView on Android?
...anyone explain or suggest a tutorial to dynamically create a ListView in android?
7 Answers
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How can I get the last 7 characters of a PHP string?
...$dynamicstring, -7);
From the php docs:
string substr ( string $string , int $start [, int $length ] )
If start is negative, the returned string will start at the start'th character from the end of string.
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How to combine two or more querysets in a Django view?
...ne, since itertools is implemented in C. It also consumes less memory than converting each queryset into a list before concatenating.
Now it's possible to sort the resulting list e.g. by date (as requested in hasen j's comment to another answer). The sorted() function conveniently accepts a generat...
Using Excel OleDb to get sheet names IN SHEET ORDER
... That's code I'd like to see! How can you query for 'the Nth sheet' and the number of sheets?
– Steve Cooper
Jul 23 '09 at 8:27
13
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What does [].forEach.call() do in JavaScript?
... Array, it is possible to iterate over it
with forEach(). It can also be converted to a real Array using
Array.from().
However, some older browsers have not implemented NodeList.forEach()
nor Array.from(). This can be circumvented by using
Array.prototype.forEach() — see this document...
How do I add more members to my ENUM-type column in MySQL?
...ySQL is notorious for allowing garbage into ENUM columns. It will silently convert non-conforming values to empty strings, for instance. Are you 100% sure you don't have any offending values? No empty strings? No leading or trailing whitespace? Case differences? Accented characters?
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How to know if other threads have finished?
...ted, or
Unorthodox, for each Thread in question, call setUncaughtExceptionHandler to call a method in your object, and program each Thread to throw an uncaught Exception when it completes, or
Use locks or synchronizers or mechanisms from java.util.concurrent, or
More orthodox, create a listener in y...
C# Pass Lambda Expression as Method Parameter
I have a lambda expression that I'd like to be able to pass around and reuse. Here's the code:
4 Answers
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