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This type of CollectionView does not support changes to its SourceCollection from a thread different

...); but it is giving syntax error. Look like Send method is expecting some callback method name. I have tried various options like delegate with parameter but it is not allowing to have my custom parameter. I am very new to this kind of syntax, so it would really helpful if you can provide me synta...
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MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)

...ands. The recommended solution is to drop this anonymous user (this is usually a good thing to do anyways). Below edits are mostly irrelevant to the main question. These are only meant to answer some questions raised in other comments within this thread. Edit 1 Authenticating as 'bill'@'%' thr...
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Rails layouts per action?

...th this is that you cannot access objects such as current_user to conditionally determine the layout – Andrew K Dec 14 '14 at 5:25 ...
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Delete column from SQLite table

...the columns, whereas something like the accepted answer seems to result in all columns to be of type TEXT. – Uwe Keim Jul 10 '17 at 15:05 2 ...
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“is” operator behaves unexpectedly with integers

...3): The current implementation keeps an array of integer objects for all integers between -5 and 256, when you create an int in that range you actually just get back a reference to the existing object. So it should be possible to change the value of 1. I suspect the behaviour of Py...
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Efficient Algorithm for Bit Reversal (from MSB->LSB to LSB->MSB) in C

... NOTE: All algorithms below are in C, but should be portable to your language of choice (just don't look at me when they're not as fast :) Options Low Memory (32-bit int, 32-bit machine)(from here): unsigned int reverse(register ...
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Django, creating a custom 500/404 error page

... for some reason request.user appears fine in the 404 template, but not at all in the 500 template (and they are almost identical) -- posted question on this here: stackoverflow.com/questions/26043211/… – Gravity Grave Sep 25 '14 at 16:13 ...
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In-memory size of a Python structure

... Yep. The "4 higher" actually mostly look like "rounding up to a multiple of 8" which I believe is correct for the way malloc behaves here. No idea why decimal gets so distorted (with pympler on 2.6, too). – Alex Martelli ...
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Finding quaternion representing the rotation from one vector to another

... Be aware that this does not handle the case of parallel vectors (both in the same direction or pointing in opposite directions). crossproduct will not be valid in these cases, so you first need to check dot(v1, v2) > 0.999999 and dot(v1, v2) < -0.999999, respectively, ...
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Disable assertions in Python

...trate each. For the whole process Using the -O flag (capital O) disables all assert statements in a process. For example: $ python -Oc "assert False" $ python -c "assert False" Traceback (most recent call last): File "<string>", line 1, in <module> AssertionError Note that by di...