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Regex Email validation
...s that are being issued, as you can have TLD's with more than 3 characters now.
– AaronLS
Jul 22 '13 at 19:04
This reg...
How to convert a PNG image to a SVG? [closed]
...
this Potrace is very accurate when you know how to use it: but its not multicolor 1.) convert your file to BMP 2.) (for the accurate part) convert bmp to a high resolution(strech it) 3.) color the shapes you want to trace in black 4.) convert 5.) change width ...
Get keys from HashMap in Java
...
This is doable, at least in theory, if you know the index:
System.out.println(team1.keySet().toArray()[0]);
keySet() returns a set, so you convert the set to an array.
The problem, of course, is that a set doesn't promise to keep your order. If you only have one...
Abstract classes in Swift Language
...e {
func accelerate(by: Float) {
speed += by
}
}
You can now create new types by implementing Drivable.
struct Car: Drivable {
var speed: Float = 0.0
init() {}
}
let c = Car()
c.accelerate(10)
So basically you get:
Compile time checks that guarantee that all Drivables...
How do I update the GUI from another thread?
...o be a string or this will fail to compile
Not only is the property name now checked at compile time, the property's type is as well, so it's impossible to (for example) assign a string value to a boolean property, and hence cause a runtime exception.
Unfortunately this doesn't stop anyone from d...
Writing outputs to log file and console
...It worked just as you suggested. But I didn't understand tee /dev/fd/3. I know that tee writes message to log file and console, but I didn't exactly understand the /dev/fd/3 used after tee
– abinash shrestha
Aug 28 '13 at 5:33
...
argparse store false if unspecified
...y#l861
The argparse docs aren't clear on the subject, so I'll update them now: http://hg.python.org/cpython/rev/49677cc6d83a
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How to evaluate a math expression given in string form?
...an(Math.toRadians(x));
else throw new RuntimeException("Unknown function: " + func);
} else {
throw new RuntimeException("Unexpected: " + (char)ch);
}
if (eat('^')) x = Math.pow(x, parseFactor()); // exponentiation
ret...
How can I perform a `git pull` without re-entering my SSH password?
...
Your situation is now fixed, however for me it was the fact that I had more than one key in ~/.ssh/
To resolve the problem I had to create a file called ~/.ssh/config and add the line:
IdentityFile ~/.ssh/my_key2_rsa
where ~/.ssh/my_key2_r...
How can I create an object based on an interface file definition in TypeScript?
...;
Or lie, with a type assertion, but you'll lost type safety as you will now get undefined in unexpected places, and possibly runtime errors, when accessing modal.content and so on (properties that the contract says will be there).
const modal = {} as IModal;
Example Class
class Modal implemen...