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What is 'Pattern Matching' in functional languages?
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head :: List a -> a
-- An empty list has no first item, so we raise an error.
head Nil = error "empty list"
-- If we are given a `Cons`, we only want the first part; that's the list's head.
head (Cons h _) = h
Since List a values can be of two different kinds, we need to handle each one...
How to execute mongo commands through shell scripts?
...ate({\"name\":\"foo\"},{$set:{\"this\":\"that\"}});"
> E QUERY SyntaxError: Unexpected token :
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Best way to select random rows PostgreSQL
...ll:
SELECT * FROM f_random_sample();
SELECT * FROM f_random_sample(500, 1.05);
You could even make this generic to work for any table: Take the name of the PK column and the table as polymorphic type and use EXECUTE ... But that's beyond the scope of this question. See:
Refactor a PL/pgSQL func...
Eclipse - Unable to install breakpoint due to missing line number attributes
I am getting this strange error in Eclipse while trying to set a breakpoint.
41 Answers
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Right query to get the current number of connections in a PostgreSQL DB
...nection
– neonidian
Dec 13 '19 at 8:05
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How do I iterate through each element in an n-dimensional matrix in MATLAB?
...ay(:)',
element = element + idx;
end
UPD. tnx @rayryeng for detected error in last answer
Disclaimer
The timing information that this post has referenced is incorrect and inaccurate due to a fundamental typo that was made (see comments stream below as well as the edit history - specificall...
Why no generics in Go?
...mation gets lost. A cast will not help much because you will get a runtime error.
– Ian
Sep 4 '13 at 20:16
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How do I remove  from the beginning of a file?
...coding (i.e., one in which EF BB BF appears where the BOM should be) is an error. To remove the BOM from a UTF-8 file, one should remove the (single) charcter U+FEFF. Yeah, pedantry!
– Jeffrey L Whitledge
Jul 15 '10 at 14:05
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Python: split a list based on a condition?
...where it's needed, thus reducing the likelihood for introducing typos/user error. Nice solution. Thanks!
– cod3monk3y
Nov 16 '13 at 21:08
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Way to get all alphabetic chars in an array in PHP?
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answered Jan 10 '09 at 23:05
PEZPEZ
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