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What's the right way to pass form element state to sibling/parent elements?

...a two way binding, you're telling the Root component that "hey, something happened down here, check out the values" or you're passing the state of some data in the child component up in order to update the state. You changed the state in C1, and you want C2 to be aware of it, so, by updating the sta...
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Get a filtered list of files in a directory

...osed to os.listdir just returning the file name. At least this is what is happening in Python 2. – k427h1c May 1 '19 at 19:41 ...
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How to implement a ViewPager with different Fragments / Layouts

...aware that I am using the support-library's Fragment: android.support.v4.app.Fragment MainActivity.java (Initializes the Viewpager and has the adapter for it as an inner class). Again have a look at the imports. I am using the android.support.v4 package. import android.os.Bundle; import android...
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how to get request path with express req object

... It's definitely the middleware. This happens with additional routers in Express 4 as well. When either is mounted off of a given path, inside of itself it gets to pretend that it's off of the root. That's nice for isolation, but tricky when you don't know how t...
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Can I use a function for a default value in MySql?

...asily create a trigger to do this, such as: CREATE TRIGGER before_insert_app_users BEFORE INSERT ON app_users FOR EACH ROW SET new.api_key = uuid(); share | improve this answer | ...
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curl json post request via terminal to a rails app

I'm trying to create a user on my rails app with a curl command from os x terminal. No matter how I format the data, the app returns a responses that non of my validations have passed. ...
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Modify Address Bar URL in AJAX App to Match Current State

I'm writing an AJAX app, but as the user moves through the app, I'd like the URL in the address bar to update despite the lack of page reloads. Basically, I'd like for them to be able to bookmark at any point and thereby return to the current state. ...
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How can I get color-int from color resource?

...Google feel the need to deprecate a perfectly good function for that awful app compact library. It sucks, have both. – Andrew S Nov 18 '16 at 18:23 4 ...
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What's a reliable way to make an iOS app crash?

I want to test my app's crash reporting out in the field by deliberately having it crash when the user performs a particular action that a real user is unlikely to do accidentally. ...