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Should Gemfile.lock be included in .gitignore?
...ile would
not provide the same guarantee, because gems usually declare a range
of versions for their dependencies.
The next time you run bundle install on the same machine, bundler will
see that it already has all of the dependencies you need, and skip the
installation process.
Do ...
Sound effects in JavaScript / HTML5
...
false, //reverse bend
0, //random pitch range
25, //dissonance
[0.2, 0.2, 2000], //echo array: [delay, feedback, filter]
undefined //reverb array: [duration, decay, reverse?]
);
}
Summary
Each of these libraries are worth a lo...
How to calculate moving average without keeping the count and data-total?
...mple, consider the behaviour you expect when most of the points are in the range 2 to 4 but one value is upwards of a million. An EWMA (here) will hold onto traces of that million for quite some time. A finite convolution, as indicated by OP, would lose it immediately after N steps. It does have ...
How do I concatenate or merge arrays in Swift?
...has the following declaration:
Appends the elements of a sequence to a range-replaceable collection.
static func += <Other>(lhs: inout Array<Element>, rhs: Other) where Other : Sequence, Self.Element == Other.Element
The following Playground sample code shows how to append the el...
How do I write a correct micro-benchmark in Java?
... Do not expect too much from micro-benchmarks; they measure only a limited range of JVM performance characteristics.
Rule 1: Always include a warmup phase which runs your test kernel all the way through, enough to trigger all initializations and compilations before timing phase(s). (Fewer iteration...
Is there any overhead to declaring a variable within a loop? (C++)
...
problem is that such an optimizer will use live range analysis, and both variables are rather dead.
– MSalters
Jun 12 '09 at 15:17
...
What are carriage return, linefeed, and form feed?
...
The FF char may seem strange today (along with the "CTRL-G" bell char) but it had more relevance back when video displays were far less common and hard copy terminals were used as data displays.
– Rick Sarvas
...
Using parameters in batch files at Windows command line
...unched from (very useful!) you can use
ECHO %~dp0
You can view the full range of these capabilities by typing CALL /? in the command prompt.
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Web API 最佳入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...is a framework that makes it easy to build HTTPservices that reach a broad range of clients, including browsers and mobile devices. ASP.NET Web API is an ideal platform for building RESTful applications on the .NET Framework.
Web API在ASP.NET完整框架中地位如下图，与SignalR一起同...
Why do we check up to the square root of a prime number to determine if it is prime?
... is smaller.
Now, if you could not find any divisor of N belonging in the range [2, sqrt(N)], what does that mean?
This means that N does not have any divisor in [2, a] as a <= sqrt(N).
Therefore, a = 1 and b = n and hence By definition, N is prime.
...
Further reading if you are not satisf...