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Does JavaScript have a method like “range()” to generate a range within the supplied bounds?
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How can I make space between two buttons in same div?
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326
Put them inside btn-toolbar or some other container, not btn-group. btn-group joins them toget...
How do you calculate log base 2 in Java for integers?
...ons are not exact. You can never know for sure what will (int)(Math.log(65536)/Math.log(2)) evaluate to. For example, Math.ceil(Math.log(1<<29) / Math.log(2)) is 30 on my PC where mathematically it should be exactly 29. I didn't find a value for x where (int)(Math.log(x)/Math.log(2)) fails (j...
Convert dd-mm-yyyy string to date
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329
Split on "-"
Parse the string into the parts you need:
var from = $("#datepicker").val().spl...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... num 1 2
## $ x2: num 1 2
## - attr(*, "na.action")= 'omit' Named int 3 4
## ..- attr(*, "names")= chr "3" "4"
ADDED Have updated to reflect latest version of dplyr and comments.
ADDED Have updated to reflect latest version of tidyr and comments.
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In C, do braces act as a stack frame?
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83
No, braces do not act as a stack frame. In C, braces only denote a naming scope, but nothing get...
How to determine when Fragment becomes visible in ViewPager
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How to determine when Fragment becomes visible in ViewPager
You can do the following by ove...
how to change default python version?
I have installed python 3.2 in my mac. After I run /Applications/Python 3.2/Update Shell Profile.command , it's confusing that when I type python -V in Terminal it says that Python 2.6.1 , how can I change the default python version?
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Java switch statement: Constant expression required, but it IS constant
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13 Answers
13
Active
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Find first element by predicate
...ly do the following test:
List<Integer> list = Arrays.asList(1, 10, 3, 7, 5);
int a = list.stream()
.peek(num -> System.out.println("will filter " + num))
.filter(x -> x > 5)
.findFirst()
.get();
System.out.println(a);
Which outputs:
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