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getting the screen density programmatically in android?
...g point scaling factor from the reference density (160dpi). The same value now provided by metrics.densityDpi can be calculated
int densityDpi = (int)(metrics.density * 160f);
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What are the barriers to understanding pointers and what can be done to overcome them? [closed]
...implified. There's more overhead and a lot more details you would
need to know if you need to deal with memory on a low-level basis. However, for the
intents of explaining memory and pointers, it is accurate enough.
Let's assume the THouse class used below looks like this:
type
THouse = clas...
When to use ' (or quote) in Lisp?
...et (+ 3 2), + is then invoked on 3 and 2 yielding 5. Our original form is now (* 5 3) yielding 15.
Explain quote Already!
Alright. As seen above, all arguments to a function are evaluated, so if you would like to pass the symbol a and not its value, you don't want to evaluate it. Lisp symbols ca...
How to return an empty ActiveRecord relation?
...and it takes an argument, depending on the value of the argument, I might know that there will not be any matches, but I still want to return a relation, not an empty array:
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How to install grunt and how to build script with it
...or combining files together:
npm install grunt-contrib-concat --save-dev
Now you need to setup your Gruntfile.js which will describe your build process. For this sample I just combine two JS files file1.js and file2.js in the js folder and generate app.js:
module.exports = function(grunt) {
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How to get all child inputs of a div element (jQuery)
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Interesting... Now I'm confused... The : is for pseudo-classes, isn't it? But we want to select an element type. Why the :?
– mnemosyn
Mar 8 '10 at 16:15
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What is the difference between Bower and npm?
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npm 3 supports a flat dependency tree now.
– vasa
Nov 21 '15 at 6:55
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What is the inverse function of zip in python? [duplicate]
I've used the zip() function from the numpy library to sort tuples and now I have a list containing all the tuples. I had since modified that list and now I would like to restore the tuples so I can use my data. How can I do this?
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CSS – why doesn’t percentage height work? [duplicate]
... container ancestor box
or in English, its parent box. (It's well worth knowing what it would be for fixed and absolute positions as well, but I'm ignoring that to keep this answer short.)
So take these two examples:
<div id="a" style="width: 100px; height: 200px; background-color: ora...
Stock ticker symbol lookup API [closed]
... As of a few days ago, this solution seems to be broken. Yahoo now requires a "region" parameter, and setting it to "US" doesn't make any difference. If anybody has a workaround, I would love to hear it!
– wstr
Oct 2 '15 at 17:39
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