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When should I use a struct instead of a class?
...Choosing Between Classes and Structures.
Basically, that page gives you a 4-item checklist and says to use a class unless your type meets all of the criteria.
Do not define a structure unless the
type has all of the following
characteristics:
It logically represents a single valu...
What is the difference between “INNER JOIN” and “OUTER JOIN”?
...with a single column each, and data as follows:
A B
- -
1 3
2 4
3 5
4 6
Note that (1,2) are unique to A, (3,4) are common, and (5,6) are unique to B.
Inner join
An inner join using either of the equivalent queries gives the intersection of the two tables, i.e. the two rows the...
SQL update fields of one table from fields of another one
...
answered May 4 '10 at 15:41
Scott BaileyScott Bailey
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...
How to convert a string into double and vice versa?
...
jjnguy
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answered Oct 4 '08 at 7:45
olliejolliej
...
How to specify HTTP error code?
...
Per the Express (Version 4+) docs, you can use:
res.status(400);
res.send('None shall pass');
http://expressjs.com/4x/api.html#res.status
<=3.8
res.statusCode = 401;
res.send('None shall pass');
...
How to implement a good __hash__ function in python [duplicate]
...
edited Sep 20 '12 at 11:34
Fred Foo
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answer...
Does Python SciPy need BLAS?
...
143
The SciPy webpage used to provide build and installation instructions, but the instructions the...
Web scraping with Python [closed]
...
from BeautifulSoup import BeautifulSoup
# or if you're using BeautifulSoup4:
# from bs4 import BeautifulSoup
soup = BeautifulSoup(urllib2.urlopen('http://example.com').read())
for row in soup('table', {'class': 'spad'})[0].tbody('tr'):
tds = row('td')
print tds[0].string, tds[1].string
...
A potentially dangerous Request.Form value was detected from the client
...
44 Answers
44
Active
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Enum “Inheritance”
...
470
This is not possible. Enums cannot inherit from other enums. In fact all enums must actually ...