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What are the differences between segment trees, interval trees, binary indexed trees and range trees
...d for "which of these intervals overlap with a given interval" queries. It can also be used for point queries - similar to segment tree.
Range tree stores points, and optimized for "which points fall within a given interval" queries.
Binary indexed tree stores items-count per index, and optimized f...
Routing with Multiple Parameters using ASP.NET MVC
...nking about using ASP.NET MVC. While designing our API, we decided to use calls like the one below for the user to request information from the API in XML format:
...
What does !important mean in CSS?
... of the selectors). Defining a rule with the !important 'attribute' (?) discards the normal concerns as regards the 'later' rule overriding the 'earlier' ones.
Also, ordinarily, a more specific rule will override a less-specific rule. So:
a {
/* css */
}
Is normally overruled by:
body div...
Webrick as production server vs. Thin or Unicorn?
...aken for granted that you must not use Webrick as production server, but I can't really find anywhere mentioning why. The consensus seems to be:
"Webrick is ok for development, but Thin or Unicorn is the choice for production, period."
...
Vim: How to insert in visual block mode?
How can you insert when you are in visual block mode (by pressing ctrl-V) in Vim?
4 Answers
...
What does “not run” mean in R help pages?
...s detailed in the manual Writing R Extensions, the author of
the help page can markup parts of the examples for two exception
rules
'dontrun' encloses code that should not be run.
'dontshow' encloses code that is invisible on help pages, but will
be run both by the package checking tools, and the...
Float vs Decimal in ActiveRecord
... types confuse me. Err, often. One of my eternal questions is, for a given case,
3 Answers
...
regex.test V.S. string.match to know if a string matches a regular expression
...lar expression regexp, use regexp.test(string).
Is the difference significant?
The answer once more is YES! This jsPerf I put together shows the difference is ~30% - ~60% depending on the browser:
Conclusion
Use .test if you want a faster boolean check. Use .match to retrieve all matches wh...
ElasticSearch - Return Unique Values
...
You can use the terms aggregation.
{
"size": 0,
"aggs" : {
"langs" : {
"terms" : { "field" : "language", "size" : 500 }
}
}}
A search will return something like:
{
"took" : 16,
"timed_out" : false,
"_shards" ...
How do I browse an old revision of a Subversion repository through the web view?
...ect's Subversion repository through its web front-end, but it seems that I can only browse the latest revision of the trunk. Is there a way to browse an older revision of the trunk through the web UI?
...