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How do JavaScript closures work?
How would you explain JavaScript closures to someone with a knowledge of the concepts they consist of (for example functions, variables and the like), but does not understand closures themselves?
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Why no ICloneable?
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ICloneable is considered a bad API now, since it does not specify whether the result is a deep or a shallow copy. I think this is why they do not improve this interface.
You can probably do a typed cloning extension method, but I think it would require a diff...
What are namespaces?
... output() to output the final feed.
When you call output(), how does PHP know whether to use your output() function or the RSS library's output() function? It doesn't. Unless you're using namespaces.
Example
How do we solve having two output() functions? Simple. We stick each output() functio...
Capturing TAB key in text box [closed]
...use the Tab key within a text box to tab over four spaces. The way it is now, the Tab key jumps my cursor to the next input.
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How to work with Git branches and Rails migrations
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@pisaruk I know you answered this six years ago, but reading I'm curious what an example of a non-reversible migration would be. I'm having a hard time imagining a situation. I guess the simplest would be a dropped column containing a ...
创建自定义 TinyWebDB 服务 · App Inventor 2 中文网
...and click Create Application to submit. If your Identifier was unique, you now have a new, empty app on Google’s servers.
Open a text editor on your local computer and open the file app.yaml within the customtinywebdb folder you unzipped. Modify the first line so that the application matches...
Check if two lists are equal [duplicate]
... this does not apply for all cases, List A {a,a} and list B contains {b,a} now ListB.All(listA.contains) and LIstA.All(listB.contains) will give different results, since both have same count, we will get true in one of them even though both are different, it wont work if a list has multiple entries ...
MySQL COUNT DISTINCT
... countVisits
, site_id As site
From cp_visits
Where ts >= DATE_SUB(NOW(), INTERVAL 1 DAY)
Group By site_id
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FFmpeg on Android
I have got FFmpeg compiled (libffmpeg.so) on Android. Now I have to build either an application like RockPlayer or use existing Android multimedia framework to invoke FFmpeg.
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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
...as df.drop(df[df.score < 50].index, inplace=True). Nevertheless didn't know the "index" trick. Helped me a lot
– Quickbeam2k1
Jun 8 '16 at 10:59
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