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How to remove specific elements in a numpy array
...mpy as np
a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9])
index = [2, 3, 6]
new_a = np.delete(a, index)
print(new_a) #Prints `[1, 2, 5, 6, 8, 9]`
Note that numpy.delete() returns a new array since array scalars are immutable, similar to strings in Python, so each time a change is made to it, a new ob...
What is the difference between Factory and Strategy patterns?
...ctory that creates your business objects. It may use different strategies based on the persistence medium. If your data is stored locally in XML it would use one strategy. If the data were remote in a different database, it would use another.
...
Token Authentication vs. Cookies
... Agreed with Michael Johnston. This answer keeps explaining what token-based authentication is but actually did not answer the question. The closest relevant info I can see is in the last bit "because of the nature of the ember.js framework and also because it fits more with the statefull web ap...
Insert line after first match using sed
...
Alternatively, for portability, you can use perl instead:
perl -pi -e '$_ .= qq(CLIENTSCRIPT2="hello"\n) if /CLIENTSCRIPT=/' file
Or you could use ed or ex:
printf '%s\n' /CLIENTSCRIPT=/a 'CLIENTSCRIPT2="hello"' . w q | ex -s file
...
Order of serialized fields using JSON.NET
...m.Type type, MemberSerialization memberSerialization)
{
return base.CreateProperties(type, memberSerialization).OrderBy(p => p.PropertyName).ToList();
}
}
And then set the settings and serialize the object, and the JSON fields will be in alphabetical order:
var settings = new ...
Should I inherit from std::exception?
...elevant information, and let the catch site format a user-friendly message based on the exception type and the data it carries.
– Emil
Jan 4 '11 at 1:26
...
BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
文章源自：https://www.gandalf.site/2018/11/ble_23.html
参考低功耗蓝牙（BLE）安全初探
0x1 信道BLE的物理通道即“频道，分别是‘f=2402+k*2 MHz, k=0, … ,39’，带宽为2MHz”的40个RF Channel。
其中，有3个信道是advertising channel（广播通道）...
Can Json.NET serialize / deserialize to / from a stream?
...JSON so the client could send {"sign in":{"username":"nick"}}{"buy item":{"_id":"32321123"}} and it needs to see this as two fragments of JSON signaling an event each time it reads a fragment. In nodejs this can be done in 3 lines of code.
– Nick Sotiros
Jun 2...
HttpSecurity, WebSecurity and AuthenticationManagerBuilder
...s("ADMIN","USER");
}
configure(HttpSecurity) allows configuration of web based security at a resource level, based on a selection match - e.g. The example below restricts the URLs that start with /admin/ to users that have ADMIN role, and declares that any other URLs need to be successfully authen...
PHP validation/regex for URL
...lieve I've run into issues, but I'm sure it's not exhaustive:
$text = preg_replace(
'#((https?|ftp)://(\S*?\.\S*?))([\s)\[\]{},;"\':<]|\.\s|$)#i',
"'<a href=\"$1\" target=\"_blank\">$3</a>$4'",
$text
);
Most of the random junk at the end is to deal with situations like http:/...