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html5 - canvas element - Multiple layers
...text.fillStyle = 'yellow';
context.fillRect(0,0,600,250);
// Now return the globalCompositeOperation to source-over and draw a
// blue rectangle
context.globalCompositeOperation = 'source-over';
// Draw a blue rectangle
context.fillStyle = 'blue';
context.fil...
Prototypical inheritance - writing up [duplicate]
... function it uses this. The value of this will be the invoking object; for now let's say it's the current instance so for bob.walk() "this" will be bob. (more on "this" and the invoking object later).
If ben was waiting for a red light and and bob was at a green light; then you'll invoke walk() on ...
Container View Controller Examples [closed]
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do you have the sample code now, i need it because i have tried a lot but no solute yet.
– iPhone Programmatically
Dec 14 '12 at 10:33
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What is the difference between JOIN and UNION?
...n one table to look up column values by using the primary key in another.
Now compare the above depiction with that of a union. In a union each row within the result is from one table OR the other. In a union, columns aren’t combined to create results, rows are combined.
Both joins and union...
Why does Java have transient fields?
...eyword, one has to understand the concept of serialization. If the reader knows about serialization, please skip the first point.
What is serialization?
Serialization is the process of making the object's state persistent. That means the state of the object is converted into a stream of bytes to b...
Cassandra port usage - how are the ports used?
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JMX now uses port 7199 instead of port 8080 (as of Cassandra 0.8.xx).
This is configurable in your cassandra-env.sh file, but the default is 7199.
share...
How to use Sublime over SSH
...I set "/Users/path/to/local/copy" to my local root directory, but I don't know if that's right or if there's more to do. Any thoughts? I'm on OSX10.8
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What does “DAMP not DRY” mean when talking about unit tests?
...of the tests. The details that were previously duplicated in each test are now hidden away in some new method or class. To get the full picture of the test, you now have to mentally put all these pieces back together.
Therefore, since test code duplication often carries less risk, and promotes read...
NGINX to reverse proxy websockets AND enable SSL (wss://)?
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Just to note that nginx has now support for Websockets on the release 1.3.13. Example of use:
location /websocket/ {
proxy_pass http://backend_host;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Co...
Using a piano keyboard as a computer keyboard [closed]
...played piano for around 20 years without any pain issues. I would like to know if there is a way to capture MIDI from a MIDI keyboard and output keyboard strokes. I know nothing at all about MIDI but I would like some guidance on how to convert this signal into a keystroke.
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