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What is the relative performance difference of if/else versus switch statement in Java?
...foolish, but when faced with constructs of comparable readability choosing one known to perform better is an appropriate decision.
– Brian Knoblauch
Jan 18 '10 at 14:49
8
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How to store arrays in MySQL?
...RIMARY KEY(`person_id`, `fruit_name`)
);
The person_fruit table contains one row for each fruit a person is associated with and effectively links the person and fruits tables together, I.E.
1 | "banana"
1 | "apple"
1 | "orange"
2 | "straberry"
2 | "banana"
2 | "apple"
When you want to retrieve ...
Are Javascript arrays sparse?
...they generally fall back to a sparse implementation - most likely the same one used for property access of regular objects - if using an actual array would be inefficient.
You'll have to ask someone with more knowledge about specific implementations to answer what excatly triggers the shift from de...
django order_by query set, ascending and descending
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Why would anyone ever want to use the 2nd method?
– MichaelR
Mar 18 '19 at 7:53
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IISExpress returns a 503 error from remote machines
...carefully to see which config file it is using.
– Colonel Panic
Apr 3 '13 at 13:17
5
Key point it...
How to prevent sticky hover effects for buttons on touch devices
...erhaps conditionally attach a different event.
I've tested this on the iPhone, iPad, Chromebook Pixel, Surface, and a variety of Android devices. I can't guarantee that it will work when a generic USB touch input (such as a stylus) is added to the mix.
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What is the volatile keyword useful for?
...atile write, is by checking whether the seen value is the expected written one.
– Holger
Jul 5 '17 at 8:06
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show 5 more comments
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How to center a WPF app on screen?
...artupLocation.CenterOwner for some child windows
– Stonetip
Jan 11 '12 at 18:38
1
The default is ...
How can I check which version of Angular I'm using?
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Best answer, the accepted one will be impossible if using minified version
– Alfredo A.
Jun 9 '16 at 13:23
9
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Tricks to manage the available memory in an R session
... can't back this idea up enough. I've taught R to a few people and this is one of first things I say. This also applies to any language where development incorporates a REPL and a file being edited (i.e. Python). rm(ls=list()) and source() works too, but re-opening is better (packages cleared too).
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