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Can you write virtual functions / methods in Java?
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From wikipedia
In Java, all non-static methods are by
default "virtual functions." Only
methods marked with the keyword final,
which cannot be overridden, along with
private methods, which are not
inherited, are non-virtual.
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Disable ActiveRecord for Rails 4
...all you need to do for an empty Rails app. If you run into problems caused by your existing code, stack trace should give you sufficient information on what you need to change. You might for example have some ActiveRecord configuration in your initializers.
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What are the underlying data structures used for Redis?
...esting usage of strings is bitmaps, and in general random access arrays of bytes, since Redis exports commands to access random ranges of bytes, or even single bits. For instance check this good blog post: Fast Easy real time metrics using Redis.
Lists
Lists are good when you are likely to touch o...
what does npm -D flag mean?
... And -D do what? (as asked on the question and already answer by others)
– user
Apr 16 at 3:04
add a comment
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Cancel/kill window.setTimeout() before it happens
...StatusIndicator()' is a function, you can gain performance (and type less) by simply: var timer1 = setTimeout(removeStatusIndicator, statusTimeout); This avoids the nested function calls.
– HarleyDave
Aug 29 '14 at 11:25
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How to convert PascalCase to pascal_case?
...ing rules:
A sequence beginning with a lowercase letter must be followed by lowercase letters and digits;
A sequence beginning with an uppercase letter can be followed by either:
one or more uppercase letters and digits (followed by either the end of the string or an uppercase letter followed by...
How to delete all datastore in Google App Engine?
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The best approach is the remote API method as suggested by Nick, he's an App Engine engineer from Google, so trust him.
It's not that difficult to do, and the latest 1.2.5 SDK provides the remote_shell_api.py out of the shelf. So go to download the new SDK. Then follow the steps:...
Don't Echo Out cURL
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
C# DateTime to UTC Time without changing the time
...her local time, Coordinated Universal Time (UTC), or neither, as indicated by the specified DateTimeKind value.
Example:
DateTime dateTime = DateTime.Now;
DateTime other = DateTime.SpecifyKind(dateTime, DateTimeKind.Utc);
Console.WriteLine(dateTime + " " + dateTime.Kind); // 6/1/2011 4:14:54 PM ...
Futures vs. Promises
...the two separate sides of an asynchronous operation.
std::promise is used by the "producer/writer" of the asynchronous operation.
std::future is used by the "consumer/reader" of the asynchronous operation.
The reason it is separated into these two separate "interfaces" is to hide the "write/set" ...