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Performing regex Queries with pymongo
...o that regex's anchored at the start (ie: starting with ^) are able to use indexes in the db, and will run much faster in that case.
– drevicko
Aug 13 '13 at 23:31
1
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How to automatically install Emacs packages by specifying a list of package names?
...
; list the packages you want
(setq package-list '(package1 package2))
; list the repositories containing them
(setq package-archives '(("elpa" . "http://tromey.com/elpa/")
("gnu" . "http://elpa.gnu.org/packages/")
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Random record from MongoDB
... document with a random number nearest rand.
And of course you'll want to index on the random field:
db.docs.ensureIndex( { key : 1, random :1 } )
If you're already querying against an index, simply drop it, append random: 1 to it, and add it again.
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Generate random numbers following a normal distribution in C/C++
...distributed random numbers. Return one, and save the other for the next request for a random number.
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How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
...lly) You don't need to be root to run this...
– confiq
Mar 31 '12 at 13:02
3
A bad bash one-liner...
When should I use a List vs a LinkedList
...nsive since it must walk the chain each time (hence why it doesn't have an indexer). However, because a List<T> is essentially just an array (with a wrapper) random access is fine.
List<T> also offers a lot of support methods - Find, ToArray, etc; however, these are also available for L...
Does have to be in the of an HTML document?
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However, due to an error made by both spec organisations, a non-normative index of elements included as an appendix in both specs was not properly updated to reflect the removal of scoped, rendering it inconsistent with the normative spec. I pointed this out both to the WhatWG and to the W3C, and i...
Convert integer into its character equivalent, where 0 => a, 1 => b, etc
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FYI JScript (IE) does not support the index operator [] on strings.
– Crescent Fresh
Jun 29 '10 at 22:21
4
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How to print to console using swift playground?
...pping the string in println(), simply output the string. For example:
for index in 1...5 {
"The number is \(index)"
}
Will write (5 times) in the playground area. This will allow you to display it in the Assistant Editor (via the little circle on the far right edge).
However, if you were to ...
Why does changing 0.1f to 0 slow down performance by 10x?
... credits to Carl Hetherington [1])
[1] http://carlh.net/plugins/denormals.php
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