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What is the difference between self::$bar and static::$bar in PHP?
...you were to use return self::$name then B::getName() would return an empty string as that is what is declared in the Base class.
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Assert an object is a specific type
...to say here... Try to change the instanceOf(BaseClass.class) to instanceOf(String.class) and you'll see that it compile just fine but there will be an AssertionError thrown.
– maba
Sep 3 '14 at 11:39
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Drawing an SVG file on a HTML5 canvas
...he DOM for reference.
You can also use the new Path2D objects to draw SVG (string) paths. In other words, you can write:
var path = new Path2D('M 100,100 h 50 v 50 h 50');
ctx.stroke(path);
Live example of that here.
Old posterity answer:
There's nothing native that allows you to natively use SVG ...
Insert, on duplicate update in PostgreSQL?
...th "id=3" does not already exist.
You can combine these two into a single string and run them both with a single SQL statement execute from your application. Running them together in a single transaction is highly recommended.
This works very well when run in isolation or on a locked table, but i...
What is a MIME type?
...nce the new naming convention "Internet Media Type".
A MIME type is a string identifier composed of two parts: a type and a subtype.
The "type" refers to a logical grouping of many MIME types that are closely related to each other; it's no more than a high level category.
"subtypes" are spe...
How to use a WSDL
...use (you will use all the settings except the URL), and the remoteURL is a string representing the URL to connect to (instead of the one contained in the config).
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Do NSUserDefaults persist through an Update to an app in the Appstore?
...a, NSUserDefaults is the best way to save data such as preferences, dates, strings etc. If you are looking to save images and files, the file system is a better bet.
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What's the difference between “declare class” and “interface” in TypeScript
...n we have the following interface:
interface test {
foo: number,
bar: string,
}
The objects which we define which have this interface type need to match the interface exactly:
// perfect match has all the properties with the right types, TS compiler will not complain.
const obj1: test = { ...
UTF-8: General? Bin? Unicode?
...eas utf8 might give you hundreds of encoding-related bugs like:
Incorrect string value: ‘\xF0\x9F\x98\x81…’ for column ‘data’ at row 1
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Handling InterruptedException in Java
...ds, it makes perfect sense for the method to throw InterruptedExceptions.
String tryToReadFile(File f) throws InterruptedException {
for (int i = 0; i < 10; i++) {
if (f.exists())
return readFile(f);
Thread.sleep(1000);
}
return null;
}
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