IP属地：安徽
https://stackoverflow.com/questions/51544044/r-what-does-rmlist-ls-do[ht...
1. :: The expression 'pkg::name' returns the value of the exported v...
The installation of lots of packages has to depend on other packages' in...
https://stackoverflow.com/questions/24536154/what-does-mean-in-r The inf...
求 array中非nan的median， mean， std numpy.nanmean(a,axis=None,dtype=None,out=...
Numpy.frompyfunc()将计算单个值的函数转化为计算数组中每个元素的函数[https://www.cnblogs.com/yhpan...
The fundamental difference is thatrandom.choices()[https://docs.python.o...
发现一篇很形象的SVD 压缩图片的文章， 线性代数与我八字不合，看不懂原理，会用code达到应用目的也是好的。 http://timbauman...