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Proper usage of Optional.ifPresent()
...ument. You're passing it an expression whose type is void. So that doesn't compile.
A Consumer is intended to be implemented as a lambda expression:
Optional<User> user = ...
user.ifPresent(theUser -> doSomethingWithUser(theUser));
Or even simpler, using a method reference:
Optional&l...
Using NumberPicker Widget with Strings
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How do I get today's date in C# in mm/dd/yyyy format?
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DateTime.Now.ToString("M/d/yyyy");
http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx
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How to cancel a pull request on github?
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load and execute order of scripts
...ecuted in the order they are encountered in the page. Inline scripts that come after external scripts are held until all external scripts that came before them have loaded and run.
Async scripts (regardless of how they are specified as async) load and run in an unpredictable order. The browser lo...
How would I get a cron job to run every 30 minutes?
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Do:
0,30 * * * * your_command
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Analyze audio using Fast Fourier Transform
... be used to get the frequency content of the audio. The FFT is defined for complex valued input functions, so the coefficients you get out will be imaginary numbers even though your input is all real values. In order to get the amount of power in each frequency, you need to calculate the magnitude o...
What does the question mark in Java generics' type parameter mean?
This is a small snippet of code taken from some of the examples that accompany the Stanford Parser. I've been developing in Java for about 4 years, but have never had a very strong understanding of what this style of code is supposed to indicate.
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Class with Object as a parameter
...n the standard library are still classic classes, for the sake of backward-compatibility.)
In general, in a statement such as
class Foo(Base1, Base2):
Foo is being declared as a class inheriting from base classes Base1 and Base2.
object is the mother of all classes in Python. It is a new-style ...
Realistic usage of the C99 'restrict' keyword?
...es the potential for pointer aliasing, enabling better optimization by the compiler.
For instance, suppose I have a machine with specialized instructions that can multiply vectors of numbers in memory, and I have the following code:
void MultiplyArrays(int* dest, int* src1, int* src2, int n)
{
...