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IllegalStateException: Can not perform this action after onSaveInstanceState with ViewPager
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Please check my answer here. Basically I just had to :
@Override
protected void onSaveInstanceState(Bundle outState) {
//No call for super(). Bug on API Level > 11.
}
Don't make the call to super() on the saveInstanceState method. This was messing t...
Run a callback only if an attribute has changed in Rails
...se changes: https://www.ombulabs.com/blog/rails/upgrades/active-record-5-1-api-changes.html
Here is the summary I made for myself on the changes to ActiveRecord::Dirty in Rails 5.1+:
ActiveRecord::Dirty
https://api.rubyonrails.org/classes/ActiveRecord/AttributeMethods/Dirty.html
Before Saving (O...
AngularJS - convert dates in controller
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All solutions here doesn't really bind the model to the input because you will have to change back the dateAsString to be saved as date in your object (in the controller after the form will be submitted).
If you don't need t...
Get a filtered list of files in a directory
...t a list of files in a directory using Python, but I do not want a list of ALL the files.
14 Answers
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Is it considered bad practice to perform HTTP POST without entity body?
...ass header Content-Length: 0. I remember problems with some proxies when I api-client didn't pass it.
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surface plots in matplotlib
...esenting a set of points in 3D space. I want to plot a surface that covers all these points.
8 Answers
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How do I update/upsert a document in Mongoose?
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Mongoose now supports this natively with findOneAndUpdate (calls MongoDB findAndModify).
The upsert = true option creates the object if it doesn't exist. defaults to false.
var query = {'username': req.user.username};
req.newData.username = req.user.username;
MyModel.findOneAndUpd...
Is there a simple, elegant way to define singletons? [duplicate]
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I don't really see the need, as a module with functions (and not a class) would serve well as a singleton. All its variables would be bound to the module, which could not be instantiated repeatedly anyway.
If you do wish to use a cla...
How to avoid installing “Unlimited Strength” JCE policy files when deploying an application?
...ted by Java out of the box. I know to get this to function correctly I install the JCE unlimited strength jars in the security folder. This is fine for me being the developer, I can install them.
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Where can I find Android source code online? [closed]
...plication(e.g.the contact application) ? Is the only way to go to download all there is?
7 Answers
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