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Markdown and image alignment
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I like to be super lazy by using tables to align images with the vertical pipe (|) syntax. This is supported by some Markdown flavours (and is also supported by Textile if that floats your boat):
| I am text to the left |  |
or
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What is the purpose of the EBP frame pointer register?
...er can figure out where local variables and arguments are using the symbol table since they are guaranteed to be at a constant offset to EBP. Otherwise there isn't an easy way to figure where a local variable is at any point in code.
As Greg mentioned, it also helps stack unwinding for a debugger s...
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
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f = Import["http://thwartedglamour.files.wordpress.com/2010/06/my-coffee-table-1-sa.jpg"]
f = ImageResize[f, ImageDimensions[f][[1]]/4]
g = MedianFilter[ColorConvert[f, "Grayscale"], 2]
h = DeleteSmallComponents[Thinning[
Binarize[ImageSubtract[Dilation[g, 1], Erosion[g, 1]]]]]
convexvert = C...
Difference between string and text in rails?
...gines can load varchar in one go, but store text (and blob) outside of the table. A SELECT name, amount FROM products could, be a lot slower when using text for name than when you use varchar. And since Rails, by default loads records with SELECT * FROM... your text-columns will be loaded. This will...
Can I use non existing CSS classes?
I have a table where I show/hide a full column by jQuery via a CSS class that doesn't exist:
13 Answers
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Why use 'virtual' for class properties in Entity Framework model definitions?
... nullable Foreign Key in SQL. You do not HAVE to eagerly join every keyed table when performing a query, but when you need the information -- it becomes demand-driven.
I also mentioned nullable because many navigation properties are not relevant at first. i.e. In a customer / Orders scenario, y...
Stop Excel from automatically converting certain text values to dates
...l.
If there's a reason you don't want to use the tab, look in an Unicode table for something else suitable.
Another option
might be to generate XML files, for which a certain format also is accepted for import by newer MS Excel versions, and which allows a lot more options similar to .XLS format...
How to execute a MySQL command from a shell script?
...h shell scripting and SQL. If you need to use them in SQL for specifying a table or database name you'll need to escape them in the shell script like so:
mysql -p=password -u "root" -Bse "CREATE DATABASE \`${1}_database\`;
CREATE USER '$1'@'%' IDENTIFIED BY '$2';
GRANT ALL PRIVILEGES ON `${1}_datab...
Is there a wikipedia API just for retrieve content summary?
...tly should this "plain text" contain. For example, how should it represent tables, whether to include "[citation needed]", navigational boxes or image descriptions.
– svick
Jan 12 '12 at 16:52
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Get records with max value for each group of grouped SQL results
...'s a super-simple way to do this in mysql:
select *
from (select * from mytable order by `Group`, age desc, Person) x
group by `Group`
This works because in mysql you're allowed to not aggregate non-group-by columns, in which case mysql just returns the first row. The solution is to first order th...