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if/else in a list comprehension
...x in row]
In general,
[f(x) if condition else g(x) for x in sequence]
And, for list comprehensions with if conditions only,
[f(x) for x in sequence if condition]
Note that this actually uses a different language construct, a conditional expression, which itself is not part of the comprehensi...
How to Set Opacity (Alpha) for View in Android
...lar problem with a TextView. I was able to solve it, by extending TextView and overriding onSetAlpha. Maybe you could try something similar with your button:
import android.content.Context;
import android.util.AttributeSet;
import android.widget.TextView;
public class AlphaTextView extends TextVie...
How to get the url parameters using AngularJS
...o sort this out given the sparse Angular documentation. The RouteProvider and routeParams is the way to go. The route wires up the URL to your Controller/View and the routeParams can be passed into the controller.
Check out the Angular seed project. Within the app.js you'll find an example for ...
fatal: early EOF fatal: index-pack failed
I have googled and found many solutions but none work for me.
31 Answers
31
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How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
... been issued, but I'm wondering if there is a method that can be called on and ActiveRecord Query.
11 Answers
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Embed image in a element
...<button> element in HTML.
The button is the same size as the image, and the image is shown but for some reason not in the center - so it's impossible to see it all.
In other words it seems like the top right corner of the image is located at the center of the button and not at the top right c...
Accessing attributes from an AngularJS directive
...cause during the linking phase the interpolation hasn't been evaluated yet and so the value is at this time set to undefined.
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Command to escape a string in bash
I need a bash command that will convert a string to something that is escaped. Here's an example:
3 Answers
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Need command line to start web browser using adb
How can I start a browser with the adb shell command and make it open a certain web page?
5 Answers
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When do you need to explicitly call a superclass constructor?
...Well there's a difference between requiring the constructor to be present, and requiring an explicit delegation to the parameterless super-constructor. The latter is a matter of style - whether you prefer to be explicit/obvious or brief.
– Jon Skeet
Dec 11 '17 ...