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Does java.util.List.isEmpty() check if the list itself is null? [duplicate]
...ollections
http://commons.apache.org/proper/commons-collections/javadocs/api-release/org/apache/commons/collections4/CollectionUtils.html#isEmpty(java.util.Collection)
which implements it quite ok and well documented:
/**
* Null-safe check if the specified collection is empty.
* <p>
* ...
Getting the caller function name inside another function in Python? [duplicate]
...the _getframe method name (hey, it starts with an underscore), it's not an API method one should be thoughtlessly rely on.
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How to assign text size in sp value using java code
... work in SP (scales pixel)
public void setTextSize (float size)
Added in API level 1
Set the default text size to the given value, interpreted as "scaled pixel" units. This
size is adjusted based on the current density and user font size preference.
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Choosing the best concurrency list in Java [closed]
...nchronizedList(new ArrayList());
http://download.oracle.com/javase/6/docs/api/java/util/Collections.html#synchronizedList(java.util.List)
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How to convert a scala.List to a java.util.List?
...er luck with asScalaBuffer() in the JavaConverters package: scala-lang.org/api/2.12.1/scala/collection/JavaConverters$.html
– Sarah Messer
Sep 4 '19 at 13:43
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How to remove “onclick” with JQuery?
...]').prop('onclick',null).off('click');
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<a id="a$id" onclick="alert('get rid of this')" href="javascript:void(0)" class="black">Qualify</a>
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How to get UTC timestamp in Ruby?
... I found this post). Unix timestamps are required in many cases (e.g., for APIs). Even after the explanation, this answer didn't give the actual way to get the timestamp.
– stuckj
Nov 9 '13 at 2:45
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Converting String to “Character” array in Java
...ce Java SE 9 & JDK 9
Link: https://docs.oracle.com/javase/9/docs/api/java/lang/Character.html
array[i] = new Character(s.charAt(i));
*/
array[i] = s.charAt(i);
}
return array;
}
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converting Java bitmap to byte array
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Ted Hopp is correct, from the API Documentation :
public void copyPixelsToBuffer (Buffer dst)
"... After this method returns, the current position of the buffer is updated: the position is incremented by the number of elements written in the buffer.
"
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Convert an array of primitive longs into a List of Longs
...dency)
import org.apache.commons.lang3.ArrayUtils;
...
long[] input = someAPI.getSomeLongs();
Long[] inputBoxed = ArrayUtils.toObject(input);
List<Long> inputAsList = Arrays.asList(inputBoxed);
it also has the reverse API
long[] backToPrimitive = ArrayUtils.toPrimitive(objectArray);
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