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Running Python code in Vim
...! allows you to run a terminal command
clear will empty your terminal screen
; ends the first command, allowing you to introduce a second command
python will use python to run your script (it could be replaced with
ruby for example)
% concats the current filename, passing it as...
Margin while printing html page
... the browser to translate it to something similar to what it looks like on screen. Using cm or mm will ensure consistent size on the paper.
body
{
margin: 25mm 25mm 25mm 25mm;
}
For font sizes, use pt for the print media.
Note that setting the margin on the body in css style will not adjust t...
Why does AuthorizeAttribute redirect to the login page for authentication and authorization failures
... read a file you don't have permission to access, you aren't shown a login screen!
Thankfully, the HTTP specifications were updated (June 2014) to remove the ambiguity.
From "Hyper Text Transport Protocol (HTTP/1.1): Authentication" (RFC 7235):
The 401 (Unauthorized) status code indicates th...
Conditionally start at different places in storyboard from AppDelegate
...fier:storyboardId];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.rootViewController = initViewController;
[self.window makeKeyAndVisible];
return YES;
}
If the storyboard is configured in the app's plist, the window and root view cont...
Best way to include CSS? Why use @import?
...tom.css';
@import url("chrome://communicator/skin/");
@import "common.css" screen, projection;
@import url('landscape.css') screen and (orientation:landscape);
source: https://developer.mozilla.org/en-US/docs/Web/CSS/@import
...
wkhtmltopdf: cannot connect to X server
...Make a file called wkhtmltopdf.sh and add the following:
xvfb-run -a -s "-screen 0 640x480x16" wkhtmltopdf "$@"
Move this shell script to /usr/local/bin, and set permissions:
sudo chmod a+x /usr/local/bin/wkhtmltopdf.sh
Check to see if it works once again: run
/usr/local/bin/wkhtmltopdf.sh ht...
UIActivityViewController crashing on iOS 8 iPads
...resentationController {
popoverController.sourceRect = CGRect(x: UIScreen.main.bounds.width / 2, y: UIScreen.main.bounds.height / 2, width: 0, height: 0)
popoverController.sourceView = self.view
popoverController.permittedArrowDirections = UIPopoverArrowDirection(rawValue: 0)...
Difference between jQTouch and jQuery mobile
...hile jQuery mobile is presented as a framework
jQTouch is focused on small screen device, from their blog :
Apps developed with jQTouch will certainly run fine on iPads and other tablet devices, but we aren’t going to automagically convert to a more tablet-friendly UI that takes advantage of ...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...re shown below.
Here’s how to implement the rotationSprite app:
On Screen1, there is a Canvas, Canvas1, which contains an ImageSprite (ArrowSprite) that we want to rotate. Label1 will show the Arrow’s heading in text format. Heading 0 points to right. We also add a RotationDetector (MyRo...
Get dimension from XML and set text size in runtime
...
Both methods getDimensionPixelSize() and getDimension() use screen density to calculate pixels. Your phone screen density is obviously hdpi (240dpi) so it uses 1.5 scale to convert dp to sp. Simple math 18 * 1.5 = 27.
It seems that your tablet density is mdpi (160dpi) so scale is jus...