大约有 43,124 项符合查询结果(耗时:0.0525秒) [XML]
How do I convert a pandas Series or index to a Numpy array? [duplicate]
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To get a NumPy array, you should use the values attribute:
In [1]: df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]}, index=['a', 'b', 'c']); df
A B
a 1 4
b 2 5
c 3 6
In [2]: df.index.values
Out[2]: array(['a', 'b', 'c'], dtype=object)
This accesses how the data is already ...
Generic List - moving an item within the list
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10 Answers
10
Active
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How to clone git repository with specific revision/changeset?
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15 Answers
15
Active
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Ruby ampersand colon shortcut [duplicate]
...foo }
something(&:foo)
Also, to_proc on Symbol is implemented in Ruby 1.8.7 and 1.9, so it is in fact a "ruby thing".
So, to sum up: & calls to_proc on the object and passes it as a block to the method, and Ruby implements to_proc on Symbol.
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Replace X-axis with own values
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179
Not sure if it's what you mean, but you can do this:
plot(1:10, xaxt = "n", xlab='Some Letter...
Get first and last date of current month with JavaScript or jQuery [duplicate]
...= new Date();
var firstDay = new Date(date.getFullYear(), date.getMonth(), 1);
var lastDay = new Date(date.getFullYear(), date.getMonth() + 1, 0);
or you might prefer:
var date = new Date(), y = date.getFullYear(), m = date.getMonth();
var firstDay = new Date(y, m, 1);
var lastDay = new Date(y, m...
How to get a list of all valid IP addresses in a local network? [closed]
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410
Install nmap,
sudo apt-get install nmap
then
nmap -sP 192.168.1.*
or more commonly
nmap ...
C++ convert from 1 char to string? [closed]
I need to cast only 1 char to string . The opposite way is pretty simple like str[0] .
2 Answers
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check / uncheck checkbox using jquery? [duplicate]
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1277
For jQuery 1.6+ :
.attr() is deprecated for properties; use the new .prop() function instea...
c++提取复数的实部和虚部 - C/C++ - 清泛网 - 专注C/C++及内核技术
...p, 0, sizeof(COMPLEX));
char buf[MAX_BUF_LEN];
int signPos = -1, // +/-号位置
iPos = -1; // 结尾的i的位置
for (int i = len-1; i >-1; i--)
{
if ('i' == strCplx[i])
iPos = i;
else if ('+' == strCplx[i] || '-' == strCplx[...
