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MySQL select 10 random rows from 600K rows fast
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Yes, if you have potentially big gaps in ID's then the chance of your lowest ID's being picked randomly is much lower than your high IDs. In fact the chance that the first ID after the biggest gap getting picked is actually the highest. Therefore th...
Programmatically access currency exchange rates [closed]
... this, is there any information on what the parameters stand for? Specifically the "f" parameter. I can't find any info anywhere.
– Fishcake
Oct 8 '09 at 6:12
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How to compare two floating point numbers in Bash?
...true or false.
Please, ensure that the bc basic calculator package is installed.
This equally works for floats in scientific format, provided a capital letter E is employed, e.g. num1=3.44E6
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What's the best practice for putting multiple projects in a git repository? [closed]
...olution 1
A single repository can contain multiple independent branches, called orphan branches. Orphan branches are completely separate from each other; they do not share histories.
git checkout --orphan BRANCHNAME
This creates a new branch, unrelated to your current branch. Each project should...
Check if a program exists from a Makefile
How can I check if a program is callable from a Makefile?
12 Answers
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How does Google Instant work?
...xactly how the new google instant search works? It seems to just be AJAX calls to the old search, but it's pretty hard to simplify Google that much. Anybody have speculations?
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How do I make a transparent border with CSS?
...t I don't mind safari much. thanks a lot!
– William Calleja
Mar 24 '10 at 10:36
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Yeah, it's spec...
Best data type for storing currency values in a MySQL database
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Something like Decimal(19,4) usually works pretty well in most cases. You can adjust the scale and precision to fit the needs of the numbers you need to store. Even in SQL Server, I tend not to use "money" as it's non-standard.
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git add all except ignoring files in .gitignore file
...roject that had none. The problem is that there are a lot of files to initially add to git with a .gitignore file, but I can't figure out how to add all files without including the files matching something in the .gitignore file.
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FFmpeg C API documentation/tutorial [closed]
...ffmpeg format or codec, take a look here:
http://wiki.multimedia.cx/index.php?title=Category:FFmpeg_Tutorials
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