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How to design a multi-user ajax web application to be concurrently safe
...deleted your change. Go cry.". Many options from rather technical diffs or more user-friendly solutions seem possible.
So how would it roll ...
Case 1: kind-of-sequence-diagram for updating:
Browser renders page
javascript "sees" artifacts which each having at least one value field, unique- and...
Function to Calculate Median in SQL Server
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2019 UPDATE: In the 10 years since I wrote this answer, more solutions have been uncovered that may yield better results. Also, SQL Server releases since then (especially SQL 2012) have introduced new T-SQL features that can be used to calculate medians. SQL Server releases have a...
How to compare two floating point numbers in Bash?
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More conveniently
This can be done more conveniently using Bash's numeric context:
if (( $(echo "$num1 > $num2" |bc -l) )); then
…
fi
Explanation
Piping through the basic calculator command bc returns either 1 or ...
Uppercase or lowercase doctype?
...x. While the syntax is inspired by SGML, it is being defined in a way that more closely resembles the way browsers actually handle HTML in the real world, particularly in regards to error handling.”
– Mathias Bynens
Jun 11 '12 at 6:05
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jQuery SVG vs. Raphael [closed]
...on.
Cons: is a layer over the actual SVG markup, makes it difficult to do more complex things with SVG - such as grouping (it supports Sets, but not groups). Doesn't do great w/ editing of already existing elements.
jQuery SVG
Pros: a jquery plugin, if you're already using jQuery. Well written an...
Using Java 8's Optional with Stream::flatMap
...and avoids dependencies on helper methods. 'Twould be nice if there were a more concise way though. I'll investigate getting Optional.stream() added.
– Stuart Marks
Apr 1 '14 at 1:00
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When NOT to use Cassandra?
..., etc in a real time manner. You can refer to this blog post to understand more about the use cases where Cassandra fits in.
When to Use a RDMS instead of Cassandra
Cassandra is based on a NoSQL database and does not provide ACID and relational data properties. If you have a strong requirement fo...
Timeout a command in bash without unnecessary delay
...where: the very same logic as in the original examples/scripts, a
# little more transparent implementation to my taste.
#
# Dmitry V Golovashkin <Dmitry.Golovashkin@sas.com>
scriptName="${0##*/}"
declare -i DEFAULT_TIMEOUT=9
declare -i DEFAULT_INTERVAL=1
declare -i DEFAULT_DELAY=1
# Timeout...
Is there an upside down caret character?
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