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C# Thread safe fast(est) counter
...
This would be simpler:
return Interlocked.Increment(ref COUNTER);
MSDN Interlocked.Increment
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foll...
Haskell Type vs Data Constructor
... of type Colour. We could imagine spicing it up though!
data Colour = RGB Int Int Int
We still have just the type Colour, but RGB is not a value – it's a function taking three Ints and returning a value! RGB has the type
RGB :: Int -> Int -> Int -> Colour
RGB is a data constructor t...
What is the difference between named and positional parameters in Dart?
... parameter. Here is an example:
getHttpUrl(String server, String path, [int port=80]) {
// ...
}
In the above code, port is optional and has a default value of 80.
You can call getHttpUrl with or without the third parameter.
getHttpUrl('example.com', '/index.html', 8080); // port == 8080
ge...
How to create a date and time picker in Android? [closed]
...
There is nothing built into Android that offers this.
EDIT: Andriod now offers built-in pickers. Check @Oded answer
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How to create relationships in MySQL
...nnodb you can create it like this:
CREATE TABLE accounts(
account_id INT NOT NULL AUTO_INCREMENT,
customer_id INT( 4 ) NOT NULL ,
account_type ENUM( 'savings', 'credit' ) NOT NULL,
balance FLOAT( 9 ) NOT NULL,
PRIMARY KEY ( account_id ),
FOREIGN KEY (customer_id) REFERENCE...
Value of i for (i == -i && i != 0) to return true in Java
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The only int value for which it works is Integer.MIN_VALUE.
It's because integers are negated using the two's complement way.
Using
System.out.println(Integer.toBinaryString(Integer.MIN_VALUE));
you see that Integer.MIN_VALUE is...
How do I create 7-Zip archives with .NET?
... work with the archive and found this thread. ShaprZipLib is a misleading hint!
– Onsokumaru
Aug 3 '18 at 9:20
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How to find nth occurrence of character in a string?
...gUtils.ordinalIndexOf, otherwise, here's an implementation:
public static int ordinalIndexOf(String str, String substr, int n) {
int pos = str.indexOf(substr);
while (--n > 0 && pos != -1)
pos = str.indexOf(substr, pos + 1);
return pos;
}
This post has been rewrit...
How to develop a soft keyboard for Android? [closed]
...it's just a Service.
I've been developing an IME, so ask again if you run into an issue.
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Is it possible to declare two variables of different types in a for loop?
...b"}}; i < N; ++i, f += 1.5) {
// ...
}
The above will give you:
int i set to 1
double f set to 1.0
std::string s set to "ab"
Make sure to #include <tuple> for this kind of declaration.
You can specify the exact types inside the tuple by typing them all out as I have with the std:...