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Find a pair of elements from an array whose sum equals a given number
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How to change MenuItem icon in ActionBar programmatically
...enu()
this.menu = menu;
In your button's onClick() method
menu.getItem(0).setIcon(ContextCompat.getDrawable(this, R.drawable.ic_launcher));
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OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...g/?release=$releasever&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-6
#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyu...
Where can I find documentation on formatting a date in JavaScript?
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1069
I love 10 ways to format time and date using JavaScript and Working with Dates.
Basically, yo...
Git pull results in extraneous “Merge branch” messages in commit log
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edited Apr 8 '14 at 10:59
answered Dec 14 '11 at 18:08
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Landscape printing from HTML
...xt/css" media="print">
.page
{
-webkit-transform: rotate(-90deg);
-moz-transform:rotate(-90deg);
filter:progid:DXImageTransform.Microsoft.BasicImage(rotation=3);
}
</style>
The final alternative I have found is to create a landscape version in a PDF. You can po...
How to index characters in a Golang string?
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edited Jul 22 '18 at 17:08
answered Feb 22 '13 at 8:51
pe...
What are the best practices for catching and re-throwing exceptions?
...$e) {
throw new Exception("Could not perform copy operation.", 0, $e);
}
}
}
This case is similar to the above (and the example probably not the best one could come up with), but it illustrates the point of providing more context: if an exception is thrown, it tells us that...
Efficient evaluation of a function at every cell of a NumPy array
... it:
import numpy as np
def f(x):
return x * x + 3 * x - 2 if x > 0 else x * 5 + 8
f = np.vectorize(f) # or use a different name if you want to keep the original f
result_array = f(A) # if A is your Numpy array
It's probably better to specify an explicit output type directly when vect...
Pandas count(distinct) equivalent
...CODE.nunique()
Example:
In [2]: table
Out[2]:
CLIENTCODE YEARMONTH
0 1 201301
1 1 201301
2 2 201301
3 1 201302
4 2 201302
5 2 201302
6 3 201302
In [3]: table.groupby('YEARMONTH').CLIENTCODE.nun...