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How to encrypt String in Java
...ou need to pick a symmetric key Block Cipher. A Block Cipher is a computer function/program used to create Pseudo-Randomness. Pseudo-Randomness is fake randomness that no computer other than a Quantum Computer would be able to tell the difference between it and real randomness. The Block Cipher is l...
Scheduling recurring task in Android
...k stackoverflow.com/questions/27872016/…
– dowjones123
Jan 10 '15 at 2:07
For simple things - like checking state ev...
Asking the user for input until they give a valid response
...u are not able to vote in the United States.")
Encapsulating it All in a Function
If you need to ask your user for a lot of different values, it might be useful to put this code in a function, so you don't have to retype it every time.
def get_non_negative_int(prompt):
while True:
tr...
Why is Git better than Subversion?
...
Linus' talk is fun to watch. He brutally rips centralized version control systems like Subversion and CVS. However, Randal Schwartz' youtube.com/watch?v=8dhZ9BXQgc4 talk is more constructive, more informative and more convincing.
...
What's the difference between :: (double colon) and -> (arrow) in PHP?
...ic function sin($angle) {
return ...;
}
}
$result = Math::sin(123);
Also, the :: operator (the Scope Resolution Operator, a.k.a Paamayim Nekudotayim) is used in dynamic context when you invoke a method/property of a parent class:
class Rectangle {
protected $x, $y;
public ...
How to print a number with commas as thousands separators in JavaScript
...ith commas as thousands separators. For example, I want to show the number 1234567 as "1,234,567". How would I go about doing this?
...
When to use symbols instead of strings in Ruby?
..., mode: "ascii")
# removed for brevity
end
write(data: 123, file: "test.txt")
freeze to keep as a string and save memory
label = 'My Label'.freeze
share
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improve this answe...
Why does one use dependency injection?
...iled. It just seems silly. My code is never a mess; I hardly write virtual functions and interfaces (although I do once in a blue moon) and all my configuration is magically serialized into a class using json.net (sometimes using an XML serializer).
...
Set the location in iPhone Simulator
...
123
As of iOS 5, the simulator has a configurable location.
Under the Debug menu, the last entry ...
How do I profile memory usage in Python?
...
123
This one has been answered already here: Python memory profiler
Basically you do something li...