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How do I implement interfaces in python?
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As mentioned by other here:
Interfaces are not necessary in Python. This is because Python has proper multiple inheritance, and also ducktyping, which means that the places where you must have interfaces in Java, you don't have to have t...
sql “LIKE” equivalent in django query
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contains and icontains mentioned by falsetru make queries like SELECT ... WHERE headline LIKE '%pattern%
Along with them, you might need these ones with similar behavior:
startswith, istartswith, endswith, iendswith
making
SELECT ... WHERE headline LIKE...
Android AsyncTask threads limits?
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All AsyncTasks are controlled internally by a shared (static) ThreadPoolExecutor and a LinkedBlockingQueue. When you call execute on an AsyncTask, the ThreadPoolExecutor will execute it when it is ready some time in the future.
The 'when am I ready?' behavior of a ...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
...ion.
Amusingly, Array.push( data ); is faster than Array[nextIndex] = data by almost 20 (dynamic array) to 10 (fixed array) times over.
Array.unshift(data) is slower as expected, and is ~approx 5x slower than a new property adding.
Nulling the value array[index] = null is faster than deleting it del...
Performance - Date.now() vs Date.getTime()
... that case, Date.now() still wins over new Date() or the like, though only by about 20% on my Chrome and by a tiny amount on IE.
See my JSPERF on
timeStamp2.setTime(Date.now()); // set to current;
vs.
timeStamp1 = new Date(); // set to current;
http://jsperf.com/new-date-vs-settime
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What is unit testing? [closed]
...st enough to make the tests pass
The code you've written is always covered by tests
By writing the test first, you're forced into thinking about how you want to call the code, which usually improves the design of the code in the long run.
If you're not doing unit testing now, I recommend you get s...
Delete sql rows where IDs do not have a match from another table
...is non-nullable. Also, the third solution (NOT IN) only requires that f.id by non-nullable. Presumably that is a primary key, so it would be.
– ToolmakerSteve
Sep 26 '16 at 7:42
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Effective way to find any file's Encoding
...encoding for me. I've had greater success determining a file's endianness, by analyzing its byte order mark (BOM). If the file does not have a BOM, this cannot determine the file's encoding.
*UPDATED 4/08/2020 to include UTF-32LE detection and return correct encoding for UTF-32BE
/// <summary&g...
SQL Server ':setvar' Error
...his can be done through the user interface in SQL Server Management Studio by going to the "Query" menu, and selecting "SQLCMD mode."
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Passing variables in remote ssh command
...etween single quote and double quote behaviour in the shell predates Linux by decades.
– sarnold
Jan 30 '19 at 3:56
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