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When should I use a composite index?
... it compares 5 ways of doing lat/lng searches: http://mysql.rjweb.org/doc.php/latlng#representation_choices (It references the link given above as one of the 5.) One of the other ways is this, and it points out that they are optimal for the particular case:
INDEX(geolat, geolng),
INDEX(geolng, g...
Using Sinatra for larger projects via multiple files
...osts/2" is received then another action - similar logic that is applied in PHP?
8 Answers
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What is the exact problem with multiple inheritance?
...t – or have used it very badly. Judging MI by C++ is like judging OOP by PHP or judging automobiles by Pintos.
– Jörg W Mittag
Dec 13 '08 at 12:40
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What does Redis do when it runs out of memory?
...ation ground to a halt (writes not possible, reads were possible), running PHP scripts stopped dead in their tracks mid-way and had to be kill -9'd manually (even after memory was made available).
I assumed data loss (or data inconsistency) had occurred so I did a flushdb and restored from backups....
Perform .join on value in array of objects
...ensions. You can do [x.name for x of users] (spec wiki.ecmascript.org/doku.php?id=harmony:array_comprehensions) . Worth mentioning that just like using map/reduce/filter isn't very 'pythonic' the other way probably holds in JavaScript. CoffeeScript is cool with them though coffeescript.org .
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What are 'get' and 'set' in Swift?
...t Programming Language from Apple, I have no Objective C background (only PHP, JS, and other but no Obj C)
5 Answers
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How to test an Internet connection with bash?
... to user somedrew for their post here: https://bbs.archlinux.org/viewtopic.php?id=55485 on 2008-09-20 02:09:48
Looking in /sys/class/net should be one way
Here's my script to test for a network connection other than the loop back.
I use the below in another script that I have for periodically test...
Conditional HTML Attributes using Razor MVC3
...on, and one users named himself '/><script>$.post('changepassword.php?password=123')</script> and now any other user who views this page has their password instantly changed to a password that the malicious user knows.
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How do you get a string to a character array in JavaScript?
...: 12.2.5 Array Initializer
spread is also referenced as "splat" (e.g. in PHP or Ruby or as "scatter" (e.g. in Python).
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Python != operation vs “is not”
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@MatrixFrog: In PHP or JavaScript we would say that is is like === (very equal), and conversely is not is like !== (not exactly equal).
– Orwellophile
Apr 2 '17 at 1:43
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