When hosting our web applications, we often have one public IP
address (i.e., an IP address visible to the outside world)
using which we want to host multiple web apps. For example, one
may wants to host three different web apps respectively for
example1.com, example2.com, and example1.com/images on
the same machine using a single IP address.
How can we do that? Well, the good news is Internet browsers
So you got your u-blox GPS and wired it up only to look at it struggling to get a valid fix? Under less than ideal conditions, it can take a better part of half an hour. That's because unlike your smartphone GPS, it doesn't have the luxury of having downloaded all the auxiliary navigation data (almanacs and the lot) out-of-band, via fast mobile connection. Instead it relies on the satellite's signal itself, which is being transmitted to you at meager 50 bits per second (I'm not missing "kilo" there, it's three orders of magnitude slower than your 2G GPRS connection).
Luckily, the u-blox receivers are fitted with what the company calls "AssistNow" capability and it does exactly the same thing your iPhone does - feeds the GPS with pre-downloaded almanacs, speeding up the acquisition process to mere seconds.
In principle, the process looks easy enough - we just need to download the data, and then push them to the receiver. Sadly, the AssistNow documentat
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style> | |
| #map_canvas | |
| { | |
| width: 400px; | |
| height: 400px; | |
| } | |
| </style> |
| # source : http://code.google.com/p/natvpn/source/browse/trunk/stun_server_list | |
| # A list of available STUN server. | |
| stun.l.google.com:19302 | |
| stun1.l.google.com:19302 | |
| stun2.l.google.com:19302 | |
| stun3.l.google.com:19302 | |
| stun4.l.google.com:19302 | |
| stun01.sipphone.com | |
| stun.ekiga.net |
| // Use Gists to store code you would like to remember later on | |
| console.log(window); // log the "window" object to the console |
| #!/bin/sh | |
| PLIST_BUDDY=/usr/libexec/PlistBuddy | |
| function add_compatibility() { | |
| "$PLIST_BUDDY" -c "Add DVTPlugInCompatibilityUUIDs:10 string $2" \ | |
| "$1/Contents/Info.plist" | |
| } | |
| function has_compatibility() { |
| - (void)scrollViewDidScroll:(UIScrollView *)scrollView | |
| { | |
| CGFloat sectionHeaderHeight = 40; | |
| if (scrollView.contentOffset.y <= sectionHeaderHeight | |
| && scrollView.contentOffset.y>=0) | |
| { | |
| scrollView.contentInset = UIEdgeInsetsMake(-scrollView.contentOffset.y, 0, 0, 0); | |
| } | |
| else if (scrollView.contentOffset.y >= sectionHeaderHeight) | |
| { |
| // Defines a yet undocumented method to add a warning if super isn't called. | |
| #ifndef NS_REQUIRES_SUPER | |
| #if __has_attribute(objc_requires_super) | |
| #define NS_REQUIRES_SUPER __attribute((objc_requires_super)) | |
| #else | |
| #define NS_REQUIRES_SUPER | |
| #endif | |
| #endif | |
| @interface UIViewController (SubclassingWarnings) |
| // Taken from the commercial iOS PDF framework http://pspdfkit.com. | |
| // Copyright (c) 2013 Peter Steinberger. All rights reserved. | |
| // Licensed under MIT (http://opensource.org/licenses/MIT) | |
| // | |
| // You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it. | |
| #import <objc/runtime.h> | |
| #import <objc/message.h> | |
| // Compile-time selector checks. |
| /** | |
| * Several macros simplifying use of weak references to self inside blocks | |
| * which goal is to reduce risk of retain cycles. | |
| * | |
| * Example: | |
| * @code | |
| @interface Example : NSObject{ | |
| int _i; | |
| } |