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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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Using Pairs or 2-tuples in Java [duplicate]
...to design this class further regarding equality, immutability, etc., especially if you plan to use instances as keys for hashing.
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Android notification is not showing
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The code won't work without an icon. So, add the setSmallIcon call to the builder chain like this for it to work:
.setSmallIcon(R.drawable.icon)
Android Oreo (8.0) and above
Android 8 introduced a new requirement of setting the channelId property by using a NotificationChannel...
Node.js Mongoose.js string to ObjectId function
...invalid string? Looking for the best way to do input validation in a REST API for mongo id fields.
– Zambonilli
Jul 21 '14 at 18:42
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No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '…' is therefor
...der Instead of using setHeader method,
response.addHeader("Access-Control-Allow-Origin", "*");
* in above line will allow access to all domains.
For allowing access to specific domain only:
response.addHeader("Access-Control-Allow-Origin", "http://www.example.com");
Check this blog post.
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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...
Make a URL-encoded POST request using `http.NewRequest(…)`
I want to make a POST request to an API sending my data as a application/x-www-form-urlencoded content type. Due to the fact that I need to manage the request headers, I'm using the http.NewRequest(method, urlStr string, body io.Reader) method to create a request. For this POST request I append ...
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...
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...
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...