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Java array reflection: isArray vs. instanceof
...ompile time. For example, perhaps you wrote some code that can work with a Integer[] or an int[]. You'd want to guard your casts with instanceof:
if (obj instanceof Integer[]) {
Integer[] array = (Integer[]) obj;
/* Use the boxed array */
} else if (obj instanceof int[]) {
int[] array =...
typedef fixed length array
... did complain. I would like to be able to define functions like type24_to_int32(type24 val) instead of type24_to_int32(char value[3]) .
...
How to return an array from JNI to Java?
...rays.
The following for loop creates the inner arrays which are of type int[] using the JNI function NewIntArray(). If you just wanted to return a single dimensional array of ints, then the NewIntArray() function is what you'd use to create the return value. If you wanted to create a single dim...
Java default constructor
... your example, it would look like this assuming that the types are String, int and int, and that the class itself is public:
public Module()
{
super();
this.name = null;
this.credits = 0;
this.hours = 0;
}
This is exactly the same as
public Module()
{}
And exactly the same as having no...
Nested Models in Backbone.js, how to approach
... for nested models
parse: (response) -> # function definition
# convert each comment attribute into a CommentsCollection
if _.isArray response
_.each response, (obj) ->
obj.comments = new AppName.Collections.CommentsCollection obj.comments
else
response.comm...
Android read text raw resource file
...txtHelp.setText(new String(b));
} catch (Exception e) {
// e.printStackTrace();
txtHelp.setText("Error: can't show help.");
}
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How to get milliseconds from LocalDateTime in Java 8
...eady have a LocalDateTime or similar object from somewhere and you want to convert it to milliseconds since the epoch. It's not possible to do that directly, since the LocalDateTime family of objects has no notion of what time zone they're in. Thus time zone information needs to be supplied to find ...
How can I count the number of matches for a regex?
...ve to do the following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw, matcher.groupCount() is something completely different.
Complete example:
import java.util.regex.*;
class Test {
public static void main(String[] args) {
...
How do I get the list of keys in a Dictionary?
...
You should be able to just look at .Keys:
Dictionary<string, int> data = new Dictionary<string, int>();
data.Add("abc", 123);
data.Add("def", 456);
foreach (string key in data.Keys)
{
Console.WriteLine(key);
}
...
Defining a function with multiple implicit arguments in Scala
... list must be the last one.
def myfun(arg:String)(implicit p1: String, p2:Int)={}
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