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How do RVM and rbenv actually work?
...earches each parent directory for an .rbenv-version file until it hits the root of your filesystem. If one is found, its contents are used to set the RBENV_VERSION environment variable.
If RBENV_VERSION is still not set, rbenv tries to set it using the contents of the ~/.rbenv/version file.
If no ve...
Is there any NoSQL data store that is ACID compliant?
... Good answer. You can have both NoSQL+ACID and non-ACID-RDBMS (think MySQL + MyISAM). I'd usually consider NoSQL as "eventually consistent". I'll throw in the CAP theorem too... :-)
– gbn
Feb 27 '12 at 9:48
...
What does Docker add to lxc-tools (the userspace LXC tools)?
... from any tarball with "docker import". For example: "debootstrap raring ./rootfs; tar -C ./rootfs -c . | docker import flimm/mybase".
– Solomon Hykes
Aug 20 '13 at 15:47
...
Same-named attributes in attrs.xml for custom view
...bute names to be defined within their own style name. They can't be at the root any more.
However, there are a couple other things to note (which is why I am also adding an answer):
The common styles don't need to be named the same thing as a view. (Thanks to this answer for pointing that out.)
Y...
How do I connect to this localhost from another computer on the same network?
... requests. You need to provide the name of the Virtual Host as well as the root/main folder of your website. To do this, add the following line at the end of that file. You need to change the DocumentRoot to wherever your main folder is. Here I have taken /Applications/MAMP/htdocs/Symfony/ as the ro...
How to find time complexity of an algorithm
...mic. There are other Big O measures such as cubic, exponential, and square root, but they're not nearly as common. Big O notation is described as O ( <type> ) where <type> is the measure. The quicksort algorithm would be described as O ( N * log ( N ) ).
Note that none of this has taken...
Running PostgreSQL in memory only
... Postgres. It does not offer an in-process/in-memory engine like HSQLDB or MySQL.
If you want to create a self-contained environment you can put the Postgres binaries into SVN (but it's more than just a single executable).
You will need to run initdb to setup your test database before you can do ...
Why no love for SQL? [closed]
...ave added their own (nonstandard) extras there. That is, SQL written for a MySQL DB might not work quite similarly with, say, an Oracle DB — even if it "should".
I agree, though, that SQL is way better than most of the abstraction layers out there. It's not SQL's fault that it's being used for th...
Performance of FOR vs FOREACH in PHP
...ur time for a micro-optimization. Remember, Premature Optimization Is The Root Of All Evil...
Edit: Based upon the comment, I decided to do a quick benchmark run...
$a = array();
for ($i = 0; $i < 10000; $i++) {
$a[] = $i;
}
$start = microtime(true);
foreach ($a as $k => $v) {
$a[$...
What's the equivalent of use-commit-times for git?
...elist.add(os.path.relpath(path))
elif os.path.isdir(path):
for root, subdirs, files in os.walk(path):
if '.git' in subdirs:
subdirs.remove('.git')
for file in files:
filelist.add(os.path.relpath(os.path.join(root, file)))
mtime = 0...