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Passing an integer by reference in Python
...n Python, assignment (=) takes whatever object is the result of the right hand side and binds it to whatever is on the left hand side *(or passes it to the appropriate function).
Understanding this, we can see why there is no way to change the value of an immutable object inside a function -- you c...
Should I size a textarea with CSS width / height or HTML cols / rows attributes?
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I recommend to use both. Rows and cols are required and useful if the client does not support CSS. But as a designer I overwrite them to get exactly the size I wish.
The recommended way to do it is via an external stylesheet e.g.
textarea {
widt...
How do you configure an OpenFileDialog to select folders?
...owserDialog, but I've never really liked that dialog. It starts too small and doesn't let me take advantage of being able to type a path.
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Do fragments really need an empty constructor?
... constructor anyway. You should have a newInstance() static method defined and pass any parameters via arguments (bundle)
For example:
public static final MyFragment newInstance(int title, String message) {
MyFragment f = new MyFragment();
Bundle bdl = new Bundle(2);
bdl.putInt(EXTRA_T...
How to pause a YouTube player when hiding the iframe?
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The easiest way to implement this behaviour is by calling the pauseVideo and playVideo methods, when necessary. Inspired by the result of my previous answer, I have written a pluginless function to achieve the desired behaviour.
The only adjustments:
I have added a function, toggleVideo
I have ...
Mean per group in a data.frame [duplicate]
I have a data.frame and I need to calculate the mean per group (i.e. per Month , below).
8 Answers
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Docker - how can I copy a file from an image to a host?
...ckerfile that fetches dependencies, compiles a build artifact from source, and runs an executable. I also want to copy the build artifact (in my case it's a .zip produced by sbt dist in '../target/`, but I think this question also applies to jars, binaries, etc.
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Listing only directories in UNIX
... doesn't have such option).
Also, can this be done with a single line command?
20 Answers
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Get loop counter/index using for…of syntax in JavaScript
I understand that the basic for…in syntax in JavaScript looks like this:
11 Answers
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Is there a reason that we cannot iterate on “reverse Range” in ruby?
I tried to iterate backwards with using a Range and each :
12 Answers
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