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Javascript !instanceof If Statement
...
Enclose in parentheses and negate on the outside.
if(!(obj instanceof Array)) {
//...
}
In this case, the order of precedence is important (https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Operator_Precedence). The ! operator precedes the instanc...
How to add elements of a Java8 stream into an existing List
...nswer is no, at least, not in general, you shouldn't use a Collector to modify an existing collection.
The reason is that collectors are designed to support parallelism, even over collections that aren't thread-safe. The way they do this is to have each thread operate independently on its own colle...
Stop setInterval call in JavaScript
... How can you start it again after stopping with 'clearInterval()'? If I try to restart it I get 2x the setInterval running.
– Dan
Apr 2 '12 at 15:37
9
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Correct way to use StringBuilder in SQL
...usually) is to reduce memory churn rather than total memory used, to make life a bit easier on the garbage collector.
Will that take memory equal to using String like below?
No, it'll cause more memory churn than just the straight concat you quoted. (Until/unless the JVM optimizer sees that th...
Accessing elements of Python dictionary by index
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Like, for example, if you had a dictionary of unknown depth, e.g, a nested dictionary, and you have element "n" at an unknown depth, stored in an unknown element.
– Ethan Bierlein
May 13 '15 at 12:27
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How do I get the height and width of the Android Navigation Bar programmatically?
...ces resources = context.getResources();
int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");
if (resourceId > 0) {
return resources.getDimensionPixelSize(resourceId);
}
return 0;
sha...
Making a div vertically scrollable using CSS
...ese two:
auto - This value will look at the width and height of the box. If they are defined, it won't let the box expand past those boundaries. Instead (if the content exceeds those boundaries), it will create a scrollbar for either boundary (or both) that exceeds its length.
scroll - This values...
Jquery: how to trigger click event on pressing enter key
......
$('#txtSearchProdAssign').keypress(function (e) {
var key = e.which;
if(key == 13) // the enter key code
{
$('input[name = butAssignProd]').click();
return false;
}
});
$(function() {
$('input[name="butAssignProd"]').click(function() {
alert('Hello...!');
});
...
What happens if a Android Service is started multiple times?
If I have the following code:
4 Answers
4
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How large should my recv buffer be when calling recv in the socket library
...uffer passed to recv()?
SOCK_STREAM: It doesn't really matter too much. If your protocol is a transactional / interactive one just pick a size that can hold the largest individual message / command you would reasonably expect (3000 is likely fine). If your protocol is transferring bulk data, the...