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Determine what attributes were changed in Rails after_save callback?

... The "selected" answer didn't work for me. I'm using rails 3.1 with CouchRest::Model (based on Active Model). The _changed? methods don't return true for changed attributes in the after_update hook, only in the before_update hook. ...
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How do I set the maximum line length in PyCharm?

...ode style->python : ensure right margin is not exceeded. Once this was selected the reformat would work. share | improve this answer | follow | ...
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Is there a CSS selector for the first direct child only?

... it seems the OP is not asking about the selector as much as why the rule is being applied to all the child divs. – Doug Neiner Jan 19 '10 at 15:29 ...
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What is MyAssembly.XmlSerializers.dll generated for?

... from being auto-generated are: In VS, right-click your project file and select "Properties" Click the "Build" tab Change the "Generate serialization assembly" dropdown from "Auto" to "Off" Rebuild and it will be gone sha...
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How to add title to subplots in Matplotlib?

...set_title can be used to set title, once the proper axes(ax) or subplot is selected. import matplotlib.pyplot as plt fig, ax = plt.subplots(2, 2, figsize=(6, 8)) for i in range(len(ax)): for j in range(len(ax[i])): ## ax[i,j].imshow(test_images_gr[0].reshape(28,28)) ax[...
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Signing a Windows EXE file

... /v "C:\filename.dll" Method 2: Using Windows Right-click the signed file Select Properties Select the Digital Signatures tab. The signature will be displayed in the Signature list section. I hope this could help you Sources: https://docs.microsoft.com/en-us/previous-versions/windows/internet-e...
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How can I check if the current date/time is past a set date/time?

... answered May 14 '10 at 7:26 Select0rSelect0r 11.3k99 gold badges3838 silver badges5656 bronze badges ...
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C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ p

... byte accesses are atomic (although not ordered) which is why I went with "char" for my example... But I am not even 100% sure about that... If you want to suggest any good "tutorial" references I will add them to my answer – Nemo Jun 12 '11 at 0:39 ...
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Partly cherry-picking a commit with Git

...t into unstaged working changes. Now git stash save --patch: interactively select unwanted material to stash. Git rolls back the stashed changes from your working copy. git commit Throw away the stash of unwanted changes: git stash drop. Tip: if you give the stash of unwanted changes a name: git ...
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C# Convert List to Dictionary

...other way to deal with duplicate is you can do like this var dic = slist.Select((element, index)=> new{element,index} ) .ToDictionary(ele=>ele.index.ToString(), ele=>ele.element); or easy way to do is var res = list.ToDictionary(str => str, str=> str); but mak...