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How to get multiple counts with one SQL query?
...method works just as nicely if you're combining lots of tables together in one query, as using sub-queries can get quite messy in that instance.
– Darren Crabb
Oct 8 '15 at 11:24
7...
Putting an if-elif-else statement on one line?
...itional operator? (the question is about condensing if-else statement to one line)
11 Answers
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Why is semicolon allowed in this python snippet?
...ython.org/reference/compound_stmts.html
Compound statements consist of one or more ‘clauses.’ A clause
consists of a header and a ‘suite.’ The clause headers of a particular
compound statement are all at the same indentation level. Each clause
header begins with a uniquely identify...
How to concatenate multiple lines of output to one line?
...attern , I get many lines of output. How do you concatenate all lines into one line, effectively replacing each "\n" with "\" " (end with " followed by space)?
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How to make Regular expression into non-greedy?
...ely following them:
* - zero or more
*? - zero or more (non-greedy)
+ - one or more
+? - one or more (non-greedy)
? - zero or one
?? - zero or one (non-greedy)
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How can I delete one element from an array by value
... What if there are multiple entries of 3 and we wanted to delete only one of them? (this is related so asking this here might be best)
– Navneet
Oct 18 '12 at 18:24
114
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Moving average or running mean
...
For a short, fast solution that does the whole thing in one loop, without dependencies, the code below works great.
mylist = [1, 2, 3, 4, 5, 6, 7]
N = 3
cumsum, moving_aves = [0], []
for i, x in enumerate(mylist, 1):
cumsum.append(cumsum[i-1] + x)
if i>=N:
mov...
JPA: How to have one-to-many relation of the same Entity type
... is possible. This is a special case of the standard bidirectional @ManyToOne/@OneToMany relationship. It is special because the entity on each end of the relationship is the same. The general case is detailed in Section 2.10.2 of the JPA 2.0 spec.
Here's a worked example. First, the entity cla...
Is there a way to get rid of accents and convert a whole string to regular letters?
...egular apart from using String.replaceAll() method and replacing letters one by one?
Example:
12 Answers
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Repair all tables in one go
How to check all the tables in the database in one go?
10 Answers
10
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