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What are the rules for evaluation order in Java?
...we care about in this question:
If the left-hand operand expression is an array access expression (§15.13), then many steps are required:
First, the array reference subexpression of the left-hand operand array access expression is evaluated. If this evaluation completes abruptly, then the assignm...
how to read value from string.xml in android?
...
By the way, it is also possible to create string arrays in the strings.xml like so:
<string-array name="tabs_names">
<item>My Tab 1</item>
<item>My Tab 2</item>
</string-array>
And then from your Activity you can get the refe...
What is a difference between
...
The reasons for this are based on how Java implements generics.
An Arrays Example
With arrays you can do this (arrays are covariant)
Integer[] myInts = {1,2,3,4};
Number[] myNumber = myInts;
But, what would happen if you try to do this?
myNumber[0] = 3.14; //attempt of heap pollution
This ...
JPQL IN clause: Java-Arrays (or Lists, Sets…)?
...uery q = em.createQuery(qlString, Item.class);
List<String> names = Arrays.asList("foo", "bar");
q.setParameter("names", names);
List<Item> actual = q.getResultList();
assertNotNull(actual);
assertEquals(2, actual.size());
Tested with EclipseLInk. With Hibernate 3.5.1, you'll need t...
Extract numbers from a string
...
How can I get my number in a simple variable and not in Array ?
– Bizboss
Jun 8 '11 at 12:15
36
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java: (String[])List.toArray() gives ClassCastException
...
This is because when you use
toArray()
it returns an Object[], which can't be cast to a String[] (even tho the contents are Strings) This is because the toArray method only gets a
List
and not
List<String>
as generics are a source code on...
Grouping functions (tapply, by, aggregate) and the *apply family
...
# apply max to columns
apply(M, 2, max)
[1] 4 8 12 16
# 3 dimensional array
M <- array( seq(32), dim = c(4,4,2))
# Apply sum across each M[*, , ] - i.e Sum across 2nd and 3rd dimension
apply(M, 1, sum)
# Result is one-dimensional
[1] 120 128 136 144
# Apply sum across each M[*, *, ] - i.e ...
Changing names of parameterized tests
...={1}" )
public static Iterable<Object[]> data() {
return Arrays.asList(new Object[][] { { 0, 0 }, { 1, 1 }, { 2, 1 },
{ 3, 2 }, { 4, 3 }, { 5, 5 }, { 6, 8 } });
}
private final int fInput;
private final int fExpected;
public FibonacciTest(int input...
assign multiple variables to the same value in Javascript
...moveUp, moveDown,
moveLeft, moveRight,
mouseDown, touchDown] = Array(6).fill(false);
console.log(JSON.stringify({
moveUp, moveDown,
moveLeft, moveRight,
mouseDown, touchDown
}, null, ' '));
// NOTE: If you want to do this with objects, you would be safer doing this...
Is there a way to access an iteration-counter in Java's for-each loop?
... for this and Java should get it too... for(int idx=0, String s; s : stringArray; ++idx) doSomethingWith(s, idx);
– Nicholas DiPiazza
Mar 6 '14 at 22:37
...