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How much faster is Redis than mongoDB?
It's widely mentioned that Redis is "Blazing Fast" and mongoDB is fast too. But, I'm having trouble finding actual numbers comparing the results of the two. Given similar configurations, features and operations (and maybe showing how the factor changes with different configurations and operations), ...
How to find the 'sizeof' (a pointer pointing to an array)?
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and apparently pascal strings are why excel runs so fast!
– Adam Naylor
Jul 14 '10 at 19:48
8
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PHP: How to send HTTP response code?
...header("HTTP/1.1 200 OK");
However, this requires special treatment for (Fast)CGI PHP:
$sapi_type = php_sapi_name();
if (substr($sapi_type, 0, 3) == 'cgi')
header("Status: 404 Not Found");
else
header("HTTP/1.1 404 Not Found");
Note: According to the HTTP RFC, the reason phrase can be a...
What are good grep tools for Windows? [closed]
...h (i.e. the --context=NUM of a command-line grep) is invaluable.
And it is fast. Very fast, even on an old computer with non-SSD drive (I know, they used to do this hard drive with spinning disks, called platters, crazy right?)
It is free.
It is portable (simple zip archive to unzip).
Original a...
How to avoid merge-commit hell on GitHub/BitBucket
...ng
If you want to avoid merge commits, you need to ensure all commits are fast-forwards. You do this by making sure your feature branch rebases cleanly onto your line of development before a merge like so:
git checkout master
git checkout -b feature/foo
# make some commits
git rebase master
git ...
How to maintain a Unique List in Java?
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The choice is yours...HashSet is universal and fast, treeset is ordered,LinkedHashset keeps insertion order...
– Frank
Nov 6 '12 at 21:31
6
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How do you convert a byte array to a hexadecimal string, and vice versa?
...urg text (n=1,238,957, 150 iterations). Here are the results, roughly from fastest to slowest. All measurements are in ticks (10,000 ticks = 1 ms) and all relative notes are compared to the [slowest] StringBuilder implementation. For the code used, see below or the test framework repo where I now ma...
data.table vs dplyr: can one do something well the other can't or does poorly?
...perations) have been added to the question already showing data.table gets faster than dplyr as the number of groups and/or rows to group by increase, including benchmarks by Matt on grouping from 10 million to 2 billion rows (100GB in RAM) on 100 - 10 million groups and varying grouping columns, wh...
How to retrieve an element from a set without removing it?
...al counterexample for being "terrible and inefficient": min(s) is slightly faster than next(iter(s)) for sets of size 1, and I came to this answer specifically looking to special-case extracting the only element from sets of size 1.
– lehiester
Jan 18 '19 at 19...
Number.sign() in javascript
...vial ways of finding number's sign ( signum function )?
May be shorter / faster / more elegant solutions than the obvious one
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