大约有 13,905 项符合查询结果（耗时：0.0186秒） [XML]
How do I sort one vector based on values of another
I have a vector x, that I would like to sort based on the order of values in vector y. The two vectors are not of the same length.
...
if else in a list comprehension [duplicate]
...
>>> l = [22, 13, 45, 50, 98, 69, 43, 44, 1]
>>> [x+1 if x >= 45 else x+5 for x in l]
[27, 18, 46, 51, 99, 70, 48, 49, 6]
Do-something if <condition>, else do-something else.
share
...
Knight's Shortest Path on Chessboard
...alue=1), and unavailable moves are disconnected (value=0), the sparse matrix would be like:
(a1,b3)=1,
(a1,c2)=1,
.....
And the shortest path of two points in a graph can be found using http://en.wikipedia.org/wiki/Dijkstra's_algorithm
Pseudo-code from wikipedia-page:
function Dijkstra(Graph,...
How to round up to the nearest 10 (or 100 or X)?
...ction to plot data. I would like to specify a nice round number for the y-axis max that is greater than the max of the dataset.
...
Is it possible to specify your own distance function using scikit-learn K-Means Clustering?
... issparse # $scipy/sparse/csr.py
__date__ = "2011-11-17 Nov denis"
# X sparse, any cdist metric: real app ?
# centres get dense rapidly, metrics in high dim hit distance whiteout
# vs unsupervised / semi-supervised svm
#....................................................................
What is the “-->” operator in C++?
...ct two separate operators, -- and >.
The conditional's code decrements x, while returning x's original (not decremented) value, and then compares the original value with 0 using the > operator.
To better understand, the statement could be written as follows:
while( (x--) > 0 )
...
How do I find the duplicates in a list and create another list with them?
...
1
2
Next
586
...
Wrap a delegate in an IEqualityComparer
...ning a correct hashcode), but I'd like to know if there is an out-of-the-box solution.
13 Answers
...
CSS hack大全 - 创意 - 清泛网 - 专注C/C++及内核技术
...览器测试仪器，测试您现在使用的浏览器类型IE6IE7IE8FirefoxOperaSafari(Chrome)IE6IE7IE8FirefoxOperaSafari(Chrome)您现...part1 —— 浏览器测试仪器，测试您现在使用的浏览器类型
/***************************************** 各游览器兼容CSS ****************...
Why does this Java code compile?
...illegal because b is an illegal forward reference to b. You can actually fix this by writing int b = this.b + 1, which compiles without complaints.
For local variables, int d = d + 1 is illegal because d is not initialized before use. This is not the case for fields, which are always default-initia...