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Validating IPv4 addresses with regexp
...aptured either way if we didn't have a full-match in the first place.
Old and shorter version (less readable) (63 chars)
^(?:(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])(\.(?!$)|$)){4}$
Older (readable) version (70 chars)
^(?:(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])(\.(?!$)|$)){4}$
It ...
How do you switch pages in Xamarin.Forms?
...dPage, the one you don't like
CarouselPage, that allows for switching left and right to next/prev pages.
On top of this, all pages also supports PushModalAsync() which just push a new page on top of the existing one.
At the very end, if you want to make sure the user can't get back to the previou...
Show and hide a View with a slide up/down animation
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With the new animation API that was introduced in Android 3.0 (Honeycomb) it is very simple to create such animations.
Sliding a View down by a distance:
view.animate().translationY(distance);
You can later slide the View back to its original position like this:
view.an...
How do I correctly detect orientation change using Phonegap on iOS?
...s works correctly in the iOS simulator on mobile Safari but doesn’t get handled correctly in Phonegap. My project is running into the same issue that is killing this test page. Is there a way to sense the orientation change using JavaScript in Phonegap?
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Why is the Fibonacci series used in agile planning poker? [closed]
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“[a] little estimation effort helps a lot and [a] big estimation effort helps little” great article
– ptim
Feb 22 '17 at 15:06
add a comment...
How to fix the uninitialized constant Rake::DSL problem on Heroku?
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Thank you. That fixed my problems and I didn't know what was going on. (Using the rails installer on windows and deploying to heroku, as a complete beginner.)
– Jack V.
Jun 14 '11 at 22:46
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Android studio Gradle build speed up
Since the last update (Build from june 25) any changes in the Android studio Gradle is painfully slow. And it also seems to autotrack changes when you edit the file and recompile on keyup.
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How to Deep clone in javascript
...first, a code example which clones object literals, any primitives, arrays and DOM nodes.
function clone(item) {
if (!item) { return item; } // null, undefined values check
var types = [ Number, String, Boolean ],
result;
// normalizing primitives if someone did new String('a...
g++ undefined reference to typeinfo
I just ran across the following error (and found the solution online, but it's not present in Stack Overflow):
17 Answers
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Django - “no module named django.core.management”
I get the following error when trying to run Django from the command line.
21 Answers
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