In ruby, there is a indiom to create a array of strings like this:
names = %w( lucas Fred Mary )
Is there something like that in groovy?
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2 Answers
If you really want to create an array rather than a list use either
String[] names = ["lucas", "Fred", "Mary"]
or
def names = ["lucas", "Fred", "Mary"].toArray()
4 Comments
tim_yates
or indeed ["lucas", "Fred", "Mary"] as String[]
Dónal
or
(String[])['Lucas', 'Fred', 'Mary']
Snekse
I think toArray() returns an Object[], not a String[].
Sinhote
It's been a year since this comment was first published, but yes, toArray() returns an array of objects. The longer, uglier version of the method is needed to return a typed array: toArray(new String[0]);
Most of the time you would create a list in groovy rather than an array. You could do it like this:
names = ["lucas", "Fred", "Mary"]
Alternately, if you did not want to quote everything like you did in the ruby example, you could do this:
names = "lucas Fred Mary".split()
2 Comments
Snekse
But sometimes APIs require a String[], so providing both options in the answer would be nice.
The Unknown Dev
Nice. I was actually looking to make an array, convert to list and then check if it contains a string, but I can skip the middle part by just creating the list directly and calling
contains(). That's Groovy!