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Scala Doubles, and Precision
... another solution without BigDecimals
Truncate:
(math floor 1.23456789 * 100) / 100
Round:
(math rint 1.23456789 * 100) / 100
Or for any double n and precision p:
def truncateAt(n: Double, p: Int): Double = { val s = math pow (10, p); (math floor n * s) / s }
Similar can be done for the r...
How to create id with AUTO_INCREMENT on Oracle?
...
CREATE SEQUENCE name_of_sequence
START WITH 1
INCREMENT BY 1
CACHE 100;
You would then either use that sequence in your INSERT statement
INSERT INTO name_of_table( primary_key_column, <<other columns>> )
VALUES( name_of_sequence.nextval, <<other values>> );
Or ...
HashSet vs LinkedHashSet
...
size add contains iterate
10 746 173 89
100 501 264 68
1000 714 410 69
10000 1975 552 69
------------- HashSet -------------
size add contains iterate
10 308 91 94
100 ...
Why does Decimal.Divide(int, int) work, but not (int / int)?
...hing worked above.
what I want to do is divide 278 by 575 and multiply by 100 to find percentage.
double p = (double)((PeopleCount * 1.0 / AllPeopleCount * 1.0) * 100.0);
%: 48,3478260869565 --> 278 / 575 ---> 0
%: 51,6521739130435 --> 297 / 575 ---> 0
if I multiply the PeopleCount ...
How to make CSS3 rounded corners hide overflow in Chrome/Opera
...e a HTTP request.
#wrapper {
width: 300px; height: 300px;
border-radius: 100px;
overflow: hidden;
position: absolute; /* this breaks the overflow:hidden in Chrome/Opera */
/* this fixes the overflow:hidden in Chrome */
-webkit-mask-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAB...
How to make an empty div take space
...t will be 1 px, if you want default height you can simply say min-height = 100px and min width = 100px, the div will always be 100x100 no way it will be 0
– Engineeroholic
Oct 24 '16 at 22:37
...
AngularJS ng-style with a conditional expression
...ou use angular < 1.1.5, you can use ng-class.
.largeWidth {
width: 100%;
}
.smallWidth {
width: 0%;
}
// [...]
ng-class="{largeWidth: myVar == 'ok', smallWidth: myVar != 'ok'}"
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...
What is the difference between “px”, “dip”, “dp” and “sp”?
...een space.
If running on an hdpi device, a 150 x 150 px image will take up 100 * 100 dp of screen space.
If running on an xhdpi device, a 150x150 px image will take up 75 * 75 dp of screen space.
The other way around: say, you want to add an image to your application and you need it to fill a 100 ...
Can Python test the membership of multiple values in a list?
...gt;= smallsubset
110 ns ± 0.702 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
>>> %timeit all(x in smallset for x in smallsubset)
951 ns ± 11.5 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)
This looks like a big difference. But as long as container is a ...
Best way to merge two maps and sum the values of same key?
...ap[Int,Int] = Map(1 -> 9, 2 -> 20)
scala> val map2 = Map(1 -> 100, 3 -> 300)
map2: scala.collection.immutable.Map[Int,Int] = Map(1 -> 100, 3 -> 300)
scala> map1 |+| map2
res2: scala.collection.immutable.Map[Int,Int] = Map(1 -> 109, 3 -> 300, 2 -> 20)
Specifically...