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How to handle exceptions in a list comprehensions?
...ention this.
But this example would be one way of preventing an exception from being raised for known failing cases.
eggs = (1,3,0,3,2)
[1/egg if egg > 0 else None for egg in eggs]
Output: [1, 0, None, 0, 0]
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Regex: match everything but specific pattern
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Not a regexp expert, but I think you could use a negative lookahead from the start, e.g. ^(?!foo).*$ shouldn't match anything starting with foo.
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Detect if Android device has Internet connection
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@varunbhardwaj There should be some URI you can hit from your web services. The first thing we request when our app starts up is a bootstrap file that contains various configuration information, that allows us to change various parameters server-side. Something like that can ...
How to sort a list of objects based on an attribute of the objects?
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from operator import attrgetter
ut.sort(key = attrgetter('count'), reverse = True)
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How to detect the currently pressed key?
...Framework version 3.0, it is possible to use the Keyboard.IsKeyDown method from the new System.Windows.Input namespace. For instance:
if (((Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl)) && Keyboard.IsKeyDown(Key.F))
{
// CTRL + F is currently pressed
}
Even t...
How to set Java environment path in Ubuntu
... perfect! thank you. NB: You might want to remove the default openJDK from your system as it appears first in the global path. So after the above script is loaded, you will only pic-up "javac" not java, because of the default openjk-jre. ~sudo apt-get remove openjdk-*~
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WebRTC vs Websockets: If WebRTC can do Video, Audio, and Data, why do I need Websockets? [closed]
...fair.
Websocket is based on top of TCP. Packet's boundary can be detected from header information of a websocket packet unlike tcp.
Typically, webrtc makes use of websocket. The signalling for webrtc is not defined, it is upto the service provider what kind of signalling he wants to use. It may be...
Converting Python dict to kwargs?
...re is a complete example showing how to use the ** operator to pass values from a dictionary as keyword arguments.
>>> def f(x=2):
... print(x)
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>>> new_x = {'x': 4}
>>> f() # default value x=2
2
>>> f(x=3) # explicit value x=3
3
>>&...
Checking if a list is empty with LINQ
...ember called Count which is updated any time something is added or removed from the list, so when you call List.Count it doesn't have to iterate through every element to get it, it just returns the data member.
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What is the use of style=“clear:both”?
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@YevgeniyAfanasyev, yes, this is true. My comment is from 2009 when that was still applicable.
– Jason
Aug 11 '15 at 18:17
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