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Extracting specific columns in numpy array
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277
I assume you wanted columns 1 and 9?
To select multiple columns at once, use
X = data[:, [1, 9...
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...参指针为非空有着密切关系的。目录1。什么是段错误？2。为什 Segment fault 之所以能够流行于世，与Glibc库中基本上所有的函数都默认形参指针为非空有着密切关系的。
目录
1。什么是段错误？
2。为什么段错误这么“麻烦...
Setting up foreign keys in phpMyAdmin?
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If you want to use phpMyAdmin to set up relations, you have to do 2 things. First of all, you have to define an index on the foreign key column in the referring table (so foo_bar.foo_id, in your case). Then, go to relation view (in the referring table) and select the referred column (so in ...
Sending emails in Node.js? [closed]
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142
votes
node-email-templates is a much better option:
https://github.com/niftylettuce...
Regular expression to match DNS hostname or IP Address?
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21 Answers
21
Active
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HTML text input field with currency symbol
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edited Mar 10 '16 at 15:29
Carlos Muñoz
14.9k77 gold badges4848 silver badges7575 bronze badges
answe...
How is the undo tree used in Vim?
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answered Jul 6 '09 at 20:09
Brian CarperBrian Carper
64.9k2525 gold badges154154 silver badges164164 bronze badges
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Google Maps JS API v3 - Simple Multiple Marker Example
..."text/javascript">
var locations = [
['Bondi Beach', -33.890542, 151.274856, 4],
['Coogee Beach', -33.923036, 151.259052, 5],
['Cronulla Beach', -34.028249, 151.157507, 3],
['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
['Maroubra Beach', -33.950198,...
Sort Go map values by keys
...o create a map as input
m := make(map[int]string)
m[1] = "a"
m[2] = "c"
m[0] = "b"
// To store the keys in slice in sorted order
keys := make([]int, len(m))
i := 0
for k := range m {
keys[i] = k
i++
}
sort.Ints(keys)
// To perform the ope...