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LINQ to SQL - Left Outer Join with multiple join conditions
...in fg.Where(f => f.otherid == 17).DefaultIfEmpty()
where p.companyid == 100
select f.value
Or you could use a subquery:
from p in context.Periods
join f in context.Facts on p.id equals f.periodid into fg
from fgi in (from f in fg
where f.otherid == 17
select f).Defaul...
Double vs. BigDecimal?
...as a certain precision. Working with doubles of various magnitudes (say d1=1000.0 and d2=0.001) could result in the 0.001 being dropped alltogether when summing as the difference in magnitude is so large. With BigDecimal this would not happen.
The disadvantage of BigDecimal is that it's slower, and...
What is the fastest way to compute sin and cos together?
... with ICC), by comparison, can separately compute sin and cos in less than 100 cycles, using a software implementation that uses SSE instead of the x87 unit. A similar software implementation that computed both simultaneously could be faster still.
– Stephen Canon
...
Python how to write to a binary file?
...rray(b'{\x03\xff\x00d')
>>> bytes(newFileBytes)
'[123, 3, 255, 0, 100]'
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Practical non-image based CAPTCHA approaches?
...a.value) + 1;
}
}
setTimeout("antiSpam()", 1000);
}
antiSpam();
Then when the form is submitted, If the antispam value is still "lalalala", then I mark it as spam. If the antispam value is an integer, I check to see if it is above something like 10 (seconds). If it...
了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
... topath 参数中指定完整路径名来同时重命名和更改文件的位置，如清单 8 中所示。
清单 8. Boost 中的重命名功能
#include <stdio.h>
#include “boost/filesystem.hpp”
int main()
{
boost::filesystem::path path("/home/user1/abc");
boost::filesystem::...
How to easily resize/optimize an image size with iOS?
...autiful. I was able to trim down images sent to a server from about 1Mb to 100k while still maintaining retina-display resolution (though I changed the 320.0 and 480.0 values to 640.0 and 1136.0) and also did some JPEG compression after scaling: UIImageJPEGRepresentation(img, 0.7f);
...
Using git repository as a database backend
...hat deals with structured document database. I have a tree of categories (~1000 categories, up to ~50 categories on each level), each category contains several thousands (up to, say, ~10000) of structured documents. Each document is several kilobytes of data in some structured form (I'd prefer YAML,...
Remove duplicate lines without sorting [duplicate]
... I may have also needed the lower memory use since I will be uniq'ing like 100,000,000 lines 8-). Just in case anyone else needs it, I just put a "-u" in the uniq portion of the command:
awk '{print(NR"\t"$0)}' file_name | sort -t$'\t' -k2,2 | uniq -u --skip-fields 1 | sort -k1,1 -t$'\t' | cut -f2...
Explicitly calling return in a function or not
...(x) return(vector(length=x,mode="numeric")))(x)
,repeats)) }
maxlen <- 1000
reps <- 10000
along <- seq(from=1,to=maxlen,by=5)
ret <- sapply(along,FUN=bench_ret2,repeats=reps)
nor <- sapply(along,FUN=bench_nor2,repeats=reps)
res <- data.frame(N=along,ELAPSED_RET=ret["elapsed",],ELA...