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Javascript when to use prototypes
...at prototype so as to gain all those methods at very little runtime cost.
One vitally important part of how jQuery gets it right is that this is hidden from the programmer. It's treated purely an optimisation, not as something that you have to worry about when using the library.
The problem with J...
What is the proper REST response code for a valid request but an empty data?
...success. Response codes in the 400s indicate failure. The summary, points one and two, are about the 204 response code (No Content).
– Chris Pfohl
Sep 7 '12 at 17:42
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What does threadsafe mean?
...”
“…and the need for a shared piece of data to be accessed by only one
thread at any given time.”
Definitely worth a read!
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How to get back to the latest commit after checking out a previous commit?
... to modify previous commits -- but suppose I make no changes. After I've done e.g. git checkout HEAD^ , how do I get back to the tip of the branch?.. git log no longer shows me the SHA of the latest commit.
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Stopping scripters from slamming your website
...he CAPTCHAs?
If you're using the site normally, you'll probably never see one. If you happen to reload the same page too often, post successive comments too quickly, or something else that triggers an alarm, make them prove they're human. In your case, this would probably be constant reloads of the...
When should I use a struct rather than a class in C#?
...ly large) are more expensive to pass around than class references (usually one machine word), so classes could end up being faster in practice.
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Multiline Comment Workarounds?
I (sort of) already know the answer to this question. But I figured it is one that gets asked so frequently on the R Users list, that there should be one solid good answer. To the best of my knowledge there is no multiline comment functionality in R. So, does anyone have any good workarounds?
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How to import a class from default package
...project with some package structure along with the default package. I have one class in default package - Calculations.java and I want to make the use of that class in any of the package (for instance in com.company.calc ). When I try to make the use of the class which is in the default package, ...
When should you NOT use a Rules Engine? [closed]
...will make them accessible to many apps that require them. I would defy anyone to tell me that a Rete rules engine with that many rules is well-understood. I'm not aware of any tools that can check to ensure that conflicts don't exist.
I think partitioning rules sets to keep them small is a better...
How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
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With SQLite, the first one is much much slower than La Voie's version when there is no index on the matched column (i.e. "home"). (Tested with 24k rows resulting in 13k rows)
– Thomas Tempelmann
Apr 30 '15 at ...