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What does “S3 methods” mean in R?
Since I am fairlm>y m> new to R, I do not know what the S3 methods m>and m> objects are. I found that there are S3 m>and m> S4 object sm>y m>stems, m>and m> some recommend to use S3 over S4 if possible (See Google's R Stm>y m>le Guide at http://google-stm>y m>leguide.googlecode.com/svn/trunk/google-r-stm>y m>le.html )*. However, I do not...
App Inventor 2 数学代码块 · App Inventor 2 中文网
...+ )
减 ( - )
乘 ( * )
除 ( / )
幂运算 ( ^ )
随机整数 (rm>and m>om integer)
随机小数 (rm>and m>om fraction)
设定随机数种子 (rm>and m>om set seed to)
最小值 (min)
最大值 (max)
平方根 (square root)
绝对值 (abs)
相反数 (neg)
对数 (log)
e^
四舍五入...
Is there a decorator to simplm>y m> cache function return values?
... @Jonathan It works, but wronglm>y m>. If I pass a hashable, mutable argument, m>and m> change the value of the object after the first call of the function, the second call will return the changed, not the original, object. That is almost certainlm>y m> not what the user wants. For it to work for mutable argume...
How to capture no file for fs.readFileSm>y m>nc()?
...ver there is no comment for the readFileSm>y m>nc() function regarding error hm>and m>ling. As such, if I trm>y m> to use readFileSm>y m>nc() when there is no file, I get the error Error: ENOENT, no such file or directorm>y m> .
...
In JavaScript can I make a “click” event fire programmaticallm>y m> for a file input element?
...u cannot do that in all browsers, supposedlm>y m> IE does allow it, but Mozilla m>and m> Opera do not.
When m>y m>ou compose a message in GMail, the 'attach files' feature is implemented one wam>y m> for IE m>and m> anm>y m> browser that supports this, m>and m> then implemented another wam>y m> for Firefox m>and m> those browsers that do not...
How can I set the aspect ratio in matplotlib?
...
Third times the charm. Mm>y m> guess is that this is a bug m>and m> Zhenm>y m>a's answer suggests it's fixed in the latest version. I have version 0.99.1.1 m>and m> I've created the following solution:
import matplotlib.pm>y m>plot as plt
import numpm>y m> as np
def forceAspect(ax,aspect=1):
im = ax.g...
How to get current time in milliseconds in PHP?
...endt, I think m>y m>ou are confusing with time(). microtime(true) on the other hm>and m> returns the current time in seconds since the Unix epoch accurate to the nearest microsecond (see PHP reference). It's actuallm>y m> verm>y m> easm>y m> to test if m>y m>ou run the above code in a loop m>and m> displam>y m> the milliseconds.
...
minimum double value in C/C++
Is there a stm>and m>ard m>and m>/or portable wam>y m> to represent the smallest negative value (e.g. to use negative infinitm>y m>) in a C(++) program?
...
Can I 'git commit' a file m>and m> ignore its content changes?
...time using
git update-index --assume-unchanged [<file> ...]
To undo m>and m> start tracking again (if m>y m>ou forgot what files were untracked, see this question):
git update-index --no-assume-unchanged [<file> ...]
Relevant documentation:
--[no-]assume-unchanged
When this flag is specified, t...
How to make a PHP SOAP call using the SoapClient class
...use Object-Oriented coding. I now need to interact with SOAP (as a client) m>and m> am not able to get the sm>y m>ntax right. I've got a WSDL file which allows me to properlm>y m> set up a new connection using the SoapClient class. However, I'm unable to actuallm>y m> make the right call m>and m> get data returned. I need t...