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How to make a great R reproducible example
...
package.
You can check you have actually made a reproducible example by starting up a fresh R session and pasting your script in.
Before putting all of your code in an email, consider putting it on Gist github . It will give your code nice syntax highlighting, and you don't have to worry abou...
Pointers vs. values in parameters and return values
... a map or communicate on a channel.
For slices you'll reslice (change the start/length/capacity of), built-in functions like append accept a slice value and return a new one. I'd imitate that; it avoids aliasing, returning a new slice helps call attention to the fact that a new array might be alloc...
What are some (concrete) use-cases for metaclasses?
... if type(attr) == types.MethodType:
if attrname.startswith("add_"):
setattr(cls, attrname, wrap_pylab_newplot(attr))
elif attrname.startswith("set_"):
setattr(cls, attrname, wrap_pylab_show(attr))
Of cou...
社交应用组件 · App Inventor 2 中文网
... that the user has successfully logged in to Twitter.
Follow(user)
Starts following a user.
RequestDirectMessages()
Requests the 20 most recent direct messages sent to the logged-in user. When the messages have
been retrieved, the system will raise the DirectMessagesReceived event and ...
Class does not implement its superclass's required members
...is that it has always been important (i.e. in Objective-C, since the day I started programming Cocoa back in Mac OS X 10.0) to deal with initializers that your class is not prepared to handle. The docs have always been quite clear about your responsibilities in this regard. But how many of us bother...
Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
...
@beldaz: One can estimate when I/O starts to dominate with a simple calculation. At a 90 MB/s average write rate which is typical of current consumer grade hard disks, flushing the 4MB buffer takes <45ms (throughput, latency is unimportant because of OS wr...
Is floating point math broken?
...ng is always exact.
That pizza cutter has very fine movements, and if you start with a whole pizza, then halve that, and continue halving the smallest slice each time, you can do the halving 53 times before the slice is too small for even its high-precision abilities. At that point, you can no long...
How to convert a number to string and vice versa in C++
...ost lexical cast. If you are not familiar with boost, it is a good idea to start with a small library like this lexical_cast. To download and install boost and its documentation go here. Although boost isn't in C++ standard many libraries of boost get standardized eventually and boost is widely cons...
Window Features - 更多技术 - 清泛网 - 专注C/C++及内核技术
...itions is true:
The process is the foreground process.
The process was started by the foreground process.
The process received the last input event.
There is no foreground process.
The foreground process is being debugged.
The foreground is not locked (see LockSetForegroundWindow).
The fore...
Peak signal detection in realtime timeseries data
...reate a time series yourself by clicking on the upper chart. The algorithm starts working after drawing lag number of observations.
Result
For the original question, this algorithm will give the following output when using the following settings: lag = 30, threshold = 5, influence = 0:
Implementa...
