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Should I use Java date and time classes or go with a 3rd party library like Joda Time?
...on
You'll have a head-start on learning java.time in Java 8, as they're at least somewhat similar
Cons:
It's another API to learn (although the docs are pretty good)
It's another library to build against and deploy
When you use Java 8, there's still some work to migrate your skills
I've failed t...
What characters are valid for JavaScript variable names?
... Regarding Encodings: please do use non-ASCII characters, at least in your string literals. We have to eliminate all the stupid software that gets the encodings "screwed up all the time". What a bliss to just type Console.WriteLine("привет") in C# and have it actually work!
...
SQL NVARCHAR and VARCHAR Limits
...To avoid the second issue simply make sure that all string literals (or at least those with lengths in the 4001 - 8000 range) are prefaced with N.
To avoid the first issue change the assignment from
DECLARE @SQL NVARCHAR(MAX);
SET @SQL = 'Foo' + 'Bar' + ...;
To
DECLARE @SQL NVARCHAR(MAX) = '';
SET...
Why covariance and contravariance do not support value type
...s topic in general.
EDIT: Having reread Eric's blog post myself, it's at least as much about identity as representation, although the two are linked. In particular:
This is why covariant and contravariant conversions of interface and delegate types require that all varying type arguments be of...
In Functional Programming, what is a functor?
...hematics. It has been borrowed by designers of functional languages in at least two different ways.
In the ML family of languages, a functor is a module that takes one or more other modules as a parameter. It's considered an advanced feature, and most beginning programmers have difficulty with i...
What are the use cases for selecting CHAR over VARCHAR in SQL?
...ead for a VARCHAR. This may vary from DB to DB, but generally, there is at least 1 byte of overhead needed to indicate length or EOL on a VARCHAR.
As was pointed out by Gaven in the comments: Things change when it comes to multi-byte characters sets, and is a is case where VARCHAR becomes a much bet...
How do I check if there are duplicates in a flat list?
...ts hairier, though it may still be possible to get O(N logN) if they're at least comparable. But you need to know or test the characteristics of the items (hashable or not, comparable or not) to get the best performance you can -- O(N) for hashables, O(N log N) for non-hashable comparables, otherwi...
Programmer Puzzle: Encoding a chess board state throughout a game
...n English) is a single dot, the shortest possible sequence, whereas Z (the least frequent) is two dashes and two beeps.
Such a scheme can significantly reduce the size of an expected message but comes at the cost of increasing the size of a random character sequence.
It should be noted that Morse ...
Ruby array to string conversion
...
Sean, you're wrong. Did you run the expression, at least once ??
– avihil
Aug 4 '13 at 13:37
I...
Fitting empirical distribution to theoretical ones with Scipy (Python)?
...he current scipy.stats distributions and returns the distribution with the least SSE between the distribution's histogram and the data's histogram.
Example Fitting
Using the El Niño dataset from statsmodels, the distributions are fit and error is determined. The distribution with the least error ...