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Draw on HTML5 Canvas using a mouse
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Here's the most straightforward way to create a drawing application with canvas:
Attach a mousedown, mousemove, and mouseup event listener to the canvas DOM
on mousedown, get the mouse coordinates, and use the moveTo() method to position your drawing cursor and the beginPath() m...
What is the difference between MVC and MVVM? [closed]
...de.
For Silverlight and WPF, the MVVM pattern is more encompassing and can appear to act as a replacement for MVC (or other patterns of organising software into separate responsibilities). One assumption, that frequently came out of this pattern, was that the ViewModel simply replaced the controller...
What is the difference between varchar and varchar2 in Oracle?
...dards. By the time the standards emerged it already had a burden of legacy apps. We all know how it happens.
– Quassnoi
Jun 1 '10 at 18:30
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Rails 4: before_filter vs. before_action
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It is just syntax difference, in rails app there is CRUD, and seven actions basically by name index, new, create, show, update, edit, destroy.
Rails 4 make it developer friendly to change syntax before filter to before action.
before_action call method before th...
How can I produce an effect similar to the iOS 7 blur view?
I'm trying to replicate this blurred background from Apple's publicly released iOS 7 example screen:
12 Answers
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Is there a DesignMode property in WPF?
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I applied your solution in my application but it doesn't work. I asked it here stackoverflow.com/questions/3987439/…. If you would, please join us and discuss.
– Nam G VU
Oct 21 '10 at 1...
Swift - How to convert String to Double
...00,00 it would cut off the 2 decimals at the end. At least this is whats happening for Objective-C. -- As per Apple documentation:(They are not locale-aware) The following convenience methods all skip initial space characters (whitespaceSet) and ignore trailing characters. They are not l...
Force CloudFront distribution/file update
I'm using Amazon's CloudFront to serve static files of my web apps.
13 Answers
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How to detect UI thread on Android?
...o detect if Thread.currentThread() is the Android system UI thread in an application?
I would like to put some asserts in my model code that asserts that only one thread ( eg the ui thread) accesses my state, to assure that no kind of synchronization is necessary.
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Logging uncaught exceptions in Python
... program is going to terminate due to an uncaught exception, which cannot happen more than once.
– Nawaz
Nov 16 '16 at 5:36
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