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Why do indexes in XPath start with 1 and not 0?
...n this XSL specification (which later separated out into XPath and others) from April 1999, "The position() function returns the position of the context node in the context node list. The first position is 1, and so the last position will be equal to last()." Were any "mere mortals" using RDF in the...
How to create local notifications?
...hedule a local notification with an alert but haven't received permission from the user to display alerts
This means you need register for local notification. This can be achieved using:
if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){
[applicati...
ArrayList vs List in C#
...class. It supports storing values of a specific type without casting to or from object (which would have incurred boxing/unboxing overhead when T is a value type in the ArrayList case). ArrayList simply stores object references. As a generic collection, List<T> implements the generic IEnumerab...
Undock Chrome Developer Tools
...er button
You can also undock/dock-to-left/dock-to-right/dock-to-bottom from the Command Menu. Press Cmd+Shift+P (Mac) or Cmd+Shift+P (Windows, Linux, Chrome OS) to open the Command Menu, then start typing bottom/left/right/undock.
DevTools documentation on docking: https://developers.google.c...
Python: how to print range a-z?
...ring.digits
This solution uses the ASCII table. ord gets the ascii value from a character and chr vice versa.
Apply what you know about lists
>>> small_letters = map(chr, range(ord('a'), ord('z')+1))
>>> an = small_letters[0:(ord('n')-ord('a')+1)]
>>> print(" ".join(a...
sizeof single struct member in C
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It was recently removed from linux/kernel.h.
– Andriy Makukha
Feb 18 at 12:47
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jQuery SVG vs. Raphael [closed]
...e its shaping up to be pretty slick (there are a few samples of the output from the early versions on Flickr).
However, just to throw another possible contender into the SVG library mix, Google's SVG Web looks very promising indeed (even though I'm not a big fan of Flash, which it uses to render in...
CSS background image alt attribute
...an an equivalent list of text blurbs. Any use of image sprites can benefit from this approach.
It is quite common for hotel listings icons to display amenities. Imagine a page which listed 50 hotel and each hotel had 10 amenities. A CSS Sprite would be perfect for this sort of thing -- better user...
UILabel text margin [duplicate]
... super.init(frame: frame)
}
// Create a new PaddingLabel instance from Storyboard with default insets
required init?(coder aDecoder: NSCoder) {
padding = UIEdgeInsets.zero // set desired insets value according to your needs
super.init(coder: aDecoder)
}
override...
“Private” (implementation) class in Python
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This is the official Python convention for 'internal' symbols; "from module import *" does not import underscore-prefixed objects.
Edit: Reference to the single underscore convention
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