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Why does the order of the loops affect performance when iterating over a 2D array?
...mensional. So while you imagine your array like this:
0,0 | 0,1 | 0,2 | 0,3
----+-----+-----+----
1,0 | 1,1 | 1,2 | 1,3
----+-----+-----+----
2,0 | 2,1 | 2,2 | 2,3
Your computer stores it in memory as a single line:
0,0 | 0,1 | 0,2 | 0,3 | 1,0 | 1,1 | 1,2 | 1,3 | 2,0 | 2,1 | 2,2 | 2,3
In the 2...
Log to the base 2 in python
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233
It's good to know that
but also know that
math.log takes an optional second argument which a...
Select statement to find duplicates on certain fields
... which there are multiple records, you can use..
select field1,field2,field3, count(*)
from table_name
group by field1,field2,field3
having count(*) > 1
Check this link for more information on how to delete the rows.
http://support.microsoft.com/kb/139444
There should be a criterion for de...
Intersection of two lists in Bash
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answered Apr 23 '10 at 3:58
ghostdog74ghostdog74
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Why does `a == b or c or d` always evaluate to True?
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3 Answers
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Hibernate dialect for Oracle Database 11g?
...
Use the Oracle 10g dialect. Also Hibernate 3.3.2+ is required for recent JDBC drivers (the internal class structure changed - symptoms will be whining about an abstract class).
Dialect of Oracle 11g is same as Oracle 10g (org.hibernate.dialect.Oracle10gDialect). Sour...
How do you downgrade rubygems?
I have rubygems 1.3.1 installed but I want to go back to 1.2.0. What's the command to downgrade rubygems?
6 Answers
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How to input a regex in string.replace?
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edited Apr 14 '11 at 15:33
answered Apr 14 '11 at 4:12
ri...
How can I check if a single character appears in a string?
... Ömer Erden
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answered Feb 3 '09 at 5:40
mP.mP.
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