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When to use inline function and when not to use it?
...f the library call the old implementation
when developing a library, in order to make a class extensible in the future you should:
add non-inline virtual destructor even if the body is empty
make all constructors non-inline
write non-inline implementations of the copy constructor and assignment...
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
...
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?
...
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/...
What is the purpose of Order By 1 in SQL select statement?
...e old code at work, and have noticed that there are several views with an order by 1 clause. What does this accomplish?
...
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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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...
Ordering by the order of values in a SQL IN() clause
I am wondering if there is away (possibly a better way) to order by the order of the values in an IN() clause.
13 Answers
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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...
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 :).
...