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Python nonlocal statement
What does the Python nonlocal statement do (in Python 3.0 and later)?
9 Answers
9
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Detect Click into Iframe using JavaScript
I understand that it is not possible to tell what the user is doing inside an iframe if it is cross domain. What I would like to do is track if the user clicked at all in the iframe . I imagine a scenario where there is an invisible div on top of the iframe and the the div will just then ...
How to work around the lack of transactions in MongoDB?
...rd I don't wish to follow because it seems that many things could go wrong and I can't test it in every aspect. I'm having a hard time refactoring my project to perform atomic operations. I don't know whether this comes from my limited viewpoint (I have only worked with SQL databases so far), or whe...
Sending websocket ping/pong frame from browser
...gn pattern (e.g. I literally send "ping" or any other string to the server and have it respond). Is ping-pong at all related to continuation frames?
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Passing multiple error classes to ruby's rescue clause in a DRY fashion
...splat operator *.
EXCEPTIONS = [FooException, BarException]
begin
a = rand
if a > 0.5
raise FooException
else
raise BarException
end
rescue *EXCEPTIONS
puts "rescued!"
end
If you are going to use a constant for the array as above (with EXCEPTIONS), note that you cannot defin...
Determining the size of an Android view at runtime
I am trying to apply an animation to a view in my Android app after my activity is created. To do this, I need to determine the current size of the view, and then set up an animation to scale from the current size to the new size. This part must be done at runtime, since the view scales to differe...
Trigger a Travis-CI rebuild without pushing a commit?
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I have found and used that in other cases. But I could have sworn I had a case where it had Errored for the reason I described above, and the gear menu lacked that option. Perhaps that was a one-time fluke, or perhaps I was mistaken. Anyw...
How to make space between LinearLayout children?
I am programatically adding custom views to a vertical LinearLayout, and I would like there to be some space between the views. I have tried adding: setPadding(0, 1, 0, 1) to my CustomView constructor, but this doesn't seem to have any effect. Any advice?
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Is it possible to push a git stash to a remote repository?
... the stash to a remote repository, retrieve the stash on another computer, and apply the stash?
11 Answers
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Re-entrant locks in C#
...g on the same object. The recursive code effectively already has the lock and so can continue unhindered.
lock(object) {...} is shorthand for using the Monitor class. As Marc points out, Monitor allows re-entrancy, so repeated attempts to lock on an object on which the current thread already has ...