大约有 44,000 项符合查询结果（耗时：0.0746秒） [XML]
Compare double to zero using epsilon
...32k, much closer to zero than the epsilon around one we calculated above!
Now this is a toy floating point model that does not reflect all the quirks of a real floating point system , but the ability to reflect values smaller than epsilon is reasonably similar with real floating point values.
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LEFT JOIN only first row
... Wouldn't at this point a simple sub-query be better? Cause now you have a join, and a sub-query. Just asking cause I am looking for solution to same problem :)
– galdikas
Feb 11 '16 at 10:36
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How to shut down the computer from C#
... a window
var psi = new ProcessStartInfo("shutdown","/s /t 0");
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
Process.Start(psi);
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Receiving “fatal: Not a git repository” when attempting to remote add a Git repo
.../index and I needed to remove .git/index.lock before doing git reset. Fine now
– Ivan
Mar 8 '19 at 11:28
1
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Tool for adding license headers to source files? [closed]
... license.txt; echo; cat $x) > /tmp/file;
mv /tmp/file $x )
done
Now run this in your source directory:
export LICENSELEN=`wc -l license.txt | cut -f1 -d ' '`
find . -type f \(-name \*.cpp -o -name \*.h \) -print0 | xargs -0 ./addlicense.sh
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Generating a random & unique 8 character string using MySQL
...no idea how many you could allocate before a collision (but it would be a known and constant value).
edit: This is now an old answer, but I saw it again with time on my hands, so, from observation...
Chance of all numbers = 2.35%
Chance of all letters = 0.05%
First collision when MD5(82945) = "7...
Check if string matches pattern
...tch one or more digits
() group things (and also return things... but for now just think of them grouping)
+ selects 1 or more
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Howto: Clean a mysql InnoDB storage engine?
...default] and ib_logfile0 and ib_logfile1 at 1G each).
Import SQLData.sql
Now, ibdata1 will still grow but only contain table metadata because each InnoDB table will exist outside of ibdata1. ibdata1 will no longer contain InnoDB data and indexes for other tables.
For example, suppose you have an ...
What is the difference between HAVING and WHERE in SQL?
...count for this, again an opportunity for improvement within the industry.
Now consider for a moment removing WHERE from the language. This time the majority of queries in existence would need to be rewritten without an obvious alternative construct. Coders would have to get creative e.g. inner join...
Web Application Problems (web.config errors) HTTP 500.19 with IIS7.5 and ASP.NET v2
...JAX Extensions was the problem. I commented that section out since AJAX is now built into 3.5
– jdiaz
Dec 3 '09 at 3:09
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