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Quickly reading very large tables as dataframes
...e end object is a data frame. So you have to convert it to a zoo object in order to use it with zoo. Look at the examples in the zoo docs for illustrations.
– JD Long
Apr 2 '13 at 12:48
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django order_by query set, ascending and descending
How can I order by descending my query set in django by date?
11 Answers
11
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How to use concerns in Rails 4
... the idea is to extract common and / or context specific chunks of code in order to clean up the models and avoid them getting too fat and messy.
As an example, I'll put one well known pattern, the taggable pattern:
# app/models/product.rb
class Product
include Taggable
...
end
# app/models/...
Fast Linux File Count for a large number of files
...bypass the alias option which might slow a little bit and -f to avoid file ordering.
ls without -f is twice slower than find/perl
except if ls is used with -f, it seems to be the same time:
[user@server logs]$ time /bin/ls . | wc -l
42916
real 0m0.109s
user 0m0.070s
sys 0m0.044s
I also...
What is the difference between an int and a long in C++?
...
Including something on the relative size-wise order of the types yields way more information than enumerating sizes for different platforms - like @Kevin states so nicely. (-1vote)
– xtofl
Nov 7 '08 at 12:43
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Visual Studio 2013 IntelliSense stops working for ASP.NET MVC5 Controllers
... was a 3rd party visual studio extension which was causing the problem. In order to find out that extension, I removed all extensions and then, added the extensions one by one and stopped where I found the culprit extension that was taking my sleep away :).
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Eclipse: Error “.. overlaps the location of another project..” when trying to create new project
...oldish)
Click OK
Once the project rebuilds, everything should be back in order.
(This was written when Eclipse Indigo was in vogue, and there may be changes as Google updates their tools to cover corner cases.)
share
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Java Ordered Map
...ts like a Map for storing and accessing key/value pairs, but can return an ordered list of keys and an ordered list of values, such that the key and value lists are in the same order?
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Optimise PostgreSQL for fast testing
...n PostgreSQL. This setting pretty much tells PostgreSQL not to bother with ordered writes or any of that other nasty data-integrity-protection and crash-safety stuff, giving it permission to totally trash your data if you lose power or have an OS crash.
Needless to say, you should never enable fsyn...
How to use GROUP BY to concatenate strings in SQL Server?
...putid, SCHME + ' ('+DESCR+')', rn=ROW_NUMBER() over (PARTITION by outputid order by schme, descr)
from @t
)
,cte2(outputid,finalstatus,rn)
as
(
select OUTPUTID, convert(varchar(max),combined), 1 from cte where rn=1
union all
select cte2.outputid, convert(varchar(max),cte2.finalstatus+', '+cte.comb...