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Multiple github accounts on the same computer?
...rsa AAAA... value is copied to the remote's ~/.ssh/authorized_keys file
Converting your id_rsa/id_rsa.pub key pairs to PEM format
So you want to tame you key files and cut down on some file system cruft? Converting your key pair to a single PEM is easy
$ cd ~/.ssh
$ openssl rsa -in id_rsa -outf...
What is the difference between “def” and “val” to define a function
...nd creates new function every time (new instance of Function1).
def even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = false
val even: Int => Boolean = _ % 2 == 0
even eq even
//Boolean = true
With def you can get new function on every call:
val test: () => Int = {
val r = ut...
Static fields on a null reference in Java
...ver you access a static variable or method with objects at compile time it converted to Class name. eg:
Main main = null;
System.out.println(main.value);
It will print the value of static variable value because at compile time It will be converted to
System.out.println(Main.value);
Proof:
do...
Draw in Canvas by finger, Android
...
Start By going through the Fingerpaint demo in the sdk sample.
Another Sample:
public class MainActivity extends Activity {
DrawingView dv ;
private Paint mPaint;
@Override
protected void onCreate(Bundle savedInstanceState) {
s...
Extracting hours from a DateTime (SQL Server 2005)
...EN 10 THEN '10AM'
WHEN 11 THEN '11AM'
WHEN 12 THEN '12PM'
ELSE CONVERT(varchar, DATEPART(HOUR, R.date_schedule)-12) + 'PM'
END
FROM
dbo.ARCHIVE_RUN_SCHEDULE R
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Difference between int[] array and int array[]
...
They are semantically identical. The int array[] syntax was only added to help C programmers get used to java.
int[] array is much preferable, and less confusing.
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Limit Decimal Places in Android EditText
...plements InputFilter {
Pattern mPattern;
public DecimalDigitsInputFilter(int digitsBeforeZero,int digitsAfterZero) {
mPattern=Pattern.compile("[0-9]{0," + (digitsBeforeZero-1) + "}+((\\.[0-9]{0," + (digitsAfterZero-1) + "})?)||(\\.)?");
}
@Override
public CharSequence filter(CharSequence sour...
How can mixed data types (int, float, char, etc) be stored in an array?
... elements a discriminated union, aka tagged union.
struct {
enum { is_int, is_float, is_char } type;
union {
int ival;
float fval;
char cval;
} val;
} my_array[10];
The type member is used to hold the choice of which member of the union is should be used for ea...
Check if two lists are equal [duplicate]
...nce equality because Equals method checks for reference equality.
var a = ints1.SequenceEqual(ints2);
Or if you don't care about elements order use Enumerable.All method:
var a = ints1.All(ints2.Contains);
The second version also requires another check for Count because it would return true ev...
How can I decode HTML characters in C#?
...s encoded with HTML character entities. Is there anything in .NET that can convert them to plain strings?
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