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val str = "first string" | |
val field = classOf[String].getDeclaredField("value") | |
field.setAccessible(true) | |
val value = field.get(str).asInstanceOf[Array[Char]] | |
value(0) = 'W' | |
value(1) = 'o' | |
str // "Worst string" |
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import scala.concurrent.ExecutionContext.Implicits.global | |
import scala.concurrent.Future | |
def future1(): Future[Int] = ??? | |
def future2(): Future[Int] = ??? | |
val z1 = for { | |
x <- future1() | |
y <- future2() | |
} yield x + y |
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LongStream.range(0, users.size()) | |
.mapToObj(this::createUserOrder) | |
.forEach(dao::save); |
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integration :: (Double -> Double ) -> Double -> Double -> Double | |
integration f a b = let | |
step = (b-a)/1000 | |
helper acc 0 x = acc | |
helper acc cnt x = | |
helper (acc + ((f x) + (f next))/2 * step) (cnt - 1) next | |
where next = x + step | |
in helper 0 1000 a |
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// sort data in column using string representation on numeric values | |
// natural order: 1, 3, 2, 0 | |
$(function () { | |
$.fn.dataTable.ext.order['my-sort'] = function (settings, col) { | |
return this.api().column(col, {order: 'index'}).nodes().map(function (td, i) { | |
var text; | |
switch ($(td).text()) { | |
case "0": | |
text = "zero"; |
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import scala.annotation.tailrec | |
def sum(numbers: Seq[Int]): Int = | |
loopRight(numbers, 0, _ + _) | |
def product(numbers: Seq[Int]): Int = | |
loopRight(numbers, 1, _ * _) | |
def sumTail(numbers: Seq[Int]): Int = | |
loopLeft(numbers, 0, (acc, i) => acc + i) |
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import java.util.*; | |
List<String> list = new ArrayList<>(); | |
list.add("one"); | |
list.add("two"); | |
for( String str : list) { | |
System.out.println(str); | |
list.add("three") | |
} |
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class A { | |
static { | |
System.out.println("static A"); | |
} | |
static { | |
System.out.println("static A2"); | |
} |
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// step 1 | |
object Factorial { | |
def fact(n: Int) = | |
if (n == 2) 2 | |
else if (n == 5) 120 | |
else 1 | |
} | |
// step 2 | |
object Factorial { |
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public class Factorial { | |
public int fact(int number) { | |
int i = 1; | |
int result = 1; | |
while (i <= number) { | |
result = result * i; | |
i++; | |
} | |
return result; | |
} |
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