大约有 25,300 项符合查询结果（耗时：0.0498秒） [XML]
const vs constexpr on variables
...
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
...
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
...
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
...
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.
...
Running MSBuild fails to read SDKToolsPath
...lationFolder)" Similarly change "v7.0A" to "v7.1" in SDK35ToolsPath and FrameworkSDKRoot.
– BlueMonkMN
Jan 19 '11 at 19:01
7
...
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...