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const vs constexpr on variables
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I believe there is a difference. Let's rename them so that we can talk about them more easily:
const double PI1 = 3.141592653589793;
constexpr double PI2 = 3.141592653589793;
Both PI1 and PI2 are constant, meaning you can not modify them. However only PI2 is a...
Standard Android Button with a different color
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I discovered that this can all be done in one file fairly easily. Put something like the following code in a file named custom_button.xml and then set background="@drawable/custom_button" in your button view:
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://sch...
Archiving project in Xcode incorrectly creates multi-application bundle
...t I want. Specifically, when I validate my archive in Organizer, it gives me the message:
5 Answers
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Where do I put image files, css, js, etc. in Codeigniter?
...unction that simply returns the full path to this depending on my setup, something similar to:
application/helpers/utility_helper.php:
function asset_url(){
return base_url().'assets/';
}
I will usually keep common routines similar to this in the same file and autoload it with codeigniter's a...
Push git commits & tags simultaneously
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Update August 2020
As mentioned originally in this answer by SoBeRich, and in my own answer, as of git 2.4.x
git push --atomic origin <branch name> <tag>
(Note: this actually work with HTTPS only with Git 2.24)
Update May 2015
As of g...
How to measure elapsed time in Python?
What I want is to start counting time somewhere in my code and then get the passed time, to measure the time it took to execute few function. I think I'm using the timeit module wrong, but the docs are just confusing for me.
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Dialog throwing "Unable to add window — token null is not for an application” with getApplication()
...ivity is trying to create an AlertDialog which requires a Context as a parameter. This works as expected if I use:
28 Answe...
How to get overall CPU usage (e.g. 57%) on Linux [closed]
...{usage=($2+$4)*100/($2+$4+$5)} END {print usage "%"}'
EDIT please read comments before copy-paste this or using this for any serious work. This was not tested nor used, it's an idea for people who do not want to install a utility or for something that works in any distribution. Some people think y...
How can I visualize per-character differences in a unified diff file?
...eated with git format-patch . The file is basically a unified diff with some metadata. If I open the file in Vim, I can see which lines have been modified, but I cannot see which characters in the changed lines differ. Does anyone know a way (in Vim, or some other free software that runs on Ubunt...