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What are the underlying data structures used for Redis?
... dynamic string library so that we don't pay (asymptotically speaking) for allocations in append operations. This way we have O(N) appends, for instance, instead of having quadratic behavior.
Lists are implemented with linked lists.
Sets and Hashes are implemented with hash tables.
Sorted sets are i...
Why do people use Heroku when AWS is present? What distinguishes Heroku from AWS? [closed]
...ally have a PaaS offering, Elastic Beanstalk, that supports Ruby, Node.js, PHP, Python, .NET and Java. I think generally most people, when they see "AWS", jump to things like EC2 and S3 and EBS, which are definitely IaaS offerings
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What characters are allowed in an email address?
...822 addresses was a mere 3.7k.
See also: RFC 822 Email Address Parser in PHP.
The formal definitions of e-mail addresses are in:
RFC 5322 (sections 3.2.3 and 3.4.1, obsoletes RFC 2822), RFC 5321, RFC 3696,
RFC 6531 (permitted characters).
Related:
The true power of regular expressions
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How to color System.out.println output? [duplicate]
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Result:
More Info on Tput
see: http://linuxcommand.org/lc3_adv_tput.php to see how tput works
see: http://invisible-island.net/ncurses/man/terminfo.5.html for a list of commands that you can use
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Why would one use the Publish/Subscribe pattern (in JS/jQuery)?
...es sense. I am familiar with the MVC pattern as I use it all the time with PHP, but I hadn't thought about it in terms of event-driven programming. :)
– Maccath
Nov 22 '12 at 13:44
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How to explain callbacks in plain english? How are they different from calling one function from ano
...ich would be processed in the process of another function. For example in PHP array_filter() and array_map() take callbacks to be called in a loop.
– Haralan Dobrev
Mar 13 '12 at 23:33
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Is there a list of screen resolutions for all Android based phones and tablets? [closed]
...arsed list of screens:
From http://www.emirweb.com/ScreenDeviceStatistics.php
####################################################################################################
# Filter out same-sized same-dp screens and width/height swap.
#####################################################...
What are the differences between Autotools, Cmake and Scons?
... a pamphlet or a blog post), and it's more of a fractal of bad design than PHP.
– weberc2
Apr 27 '15 at 18:53
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How can I find the data structure that represents mine layout of Minesweeper in memory?
... there's a wealth of tutorials here:
http://memoryhacking.com/forums/index.php
Also, download CheatEngine (mentioned by Nick D.) and work through the tutorial it comes with.
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What's the difference between utf8_general_ci and utf8_unicode_ci?
...lecting via equalities or dealing with unique indices - bugs.mysql.com/bug.php?id=16526
– Mat Schaffer
Mar 13 '15 at 15:22
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