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Haskell: Lists, Arrays, Vectors, Sequences
...stant , aka purely functional, which is very nice. Haskell lists aren't really "lists" because they are coinductive (other languages call these streams) so things like
ones :: [Integer]
ones = 1:ones
twos = map (+1) ones
tenTwos = take 10 twos
work wonderfully. Infinite data structures rock.
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What is this CSS selector? [class*=“span”]
... Would like to add another reference just in case people find this useful: AllCssSelectors.com
– user3339411
Jul 7 '15 at 5:44
6
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Undo changes in entity framework entities
...s might be a trivial question but: Since ADO.NET entity framework automatically tracks changes (in generated entities) and therefore keeps the original values, how can I rollback changes made to the entity objects?
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How to add a line break in C# .NET documentation
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The bad thing about this is that it actually adds one whole blank line, instead of just new line.
– Devid
May 16 '16 at 12:21
6
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Is log(n!) = Θ(n·log(n))?
...) >= n/2 * log(n/2) = Omega(n log n).
– Keith Randall
Jan 19 '10 at 22:40
2
@Keith: I don't ge...
How to restore the permissions of files and directories within git if they have been modified?
I have a git checkout. All the file permissions are different than what git thinks they should be therefore they all show up as modified.
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What's the difference between Cache-Control: max-age=0 and no-cache?
... request
without successful revalidation with
the origin server. This allows an
origin server to prevent caching even
by caches that have been configured to
return stale responses to client
requests.
In other words, caches may sometimes choose to use a stale response (although I belie...
How do you list the primary key of a SQL Server table?
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Actually, I believe you have to also constrain by Schema, right? So, you'd need to add "And COL.TABLE_SCHEMA = '<your schema name>'" as well.
– DavidStein
May 17 '13 at 15:56
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How to debug .htaccess RewriteRule not working
...l 9 Using a high value for Level will slow down your Apache server dramatically! Use the rewriting logfile at a Level greater than 2 only for debugging!
Level 9 will log almost every rewritelog detail.
UPDATE
Things have changed in Apache 2.4:
FROM Upgrading to 2.4 from 2.2
The RewriteLog ...
Windows recursive grep command-line
...hes pattern if at the end of a line.
/L Uses search strings literally.
/R Uses search strings as regular expressions.
/S Searches for matching files in the current directory and all
subdirectories.
/I Specifies that the search is not to be case-se...