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Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
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Wai Ha Lee
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answered Apr 4 '11 at 21:50
Vadym ChekanVadym ...
How to display loading message when an iFrame is loading?
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edited Jun 3 '19 at 18:01
Felipe Augusto
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MemoryCache does not obey memory limits in configuration
I’m working with the .NET 4.0 MemoryCache class in an application and trying to limit the maximum cache size, but in my tests it does not appear that the cache is actually obeying the limits.
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MySQL: Fastest way to count number of rows
...SELECT:
SELECT SQL_CALC_FOUND_ROWS [needed fields or *] FROM table LIMIT 20 OFFSET 0;
After you have selected needed rows, you can get the count with this single query:
SELECT FOUND_ROWS();
FOUND_ROWS() has to be called immediately after the data selecting query.
In conclusion, everything a...
How do you test functions and closures for equality?
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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
...urns None
return z
and now:
z = merge_two_dicts(x, y)
In Python 3.9.0a4 or greater (final release date approx October 2020): PEP-584, discussed here, was implemented to further simplify this:
z = x | y # NOTE: 3.9+ ONLY
Explanation
Say you have two dictionaries and you want to mer...
Format date in a specific timezone
...t in Manto's answer, .utcOffset() is the preferred method as of Moment 2.9.0. This function uses the real offset from UTC, not the reverse offset (e.g., -240 for New York during DST). Offset strings like "+0400" work the same as before:
// always "2013-05-23 00:55"
moment(1369266934311).utcOffset(6...
How should I escape strings in JSON?
...aracters you must escape are \, ", and control codes (anything less than U+0020).
This structure of escaping is specific to JSON. You'll need a JSON specific function. All of the escapes can be written as \uXXXX where XXXX is the UTF-16 code unit¹ for that character. There are a few shortcuts, suc...
How to cast an Object to an int
...ce between autoboxing and casting?
Autoboxing: So I can write: Integer i = 0; instead of: Integer i = new Integer(0);
Convert Object into primitive int
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