groovy bug? -- creating an initialized float array?

Question

I'm using Groovy 1.8.3 (in Grails 2.0). I need to declare some float arrays, and am using the standard java syntax, e.g.:

 float rentVal[] = {1.37f, 1.69f, 2.07f, 2.53f}

The compiler errors on this, saying: expecting '}', found '='

Perhaps because it's late night (pacific time) I'm confusing something here. My question is what's the right way to do this in Groovy.

Thanks

socha23 · Accepted Answer · 2011-10-28 11:49:16Z

8

Tried this in GroovyConsole:

groovy> def rentVal = [1.37f, 1.69f, 2.07f, 2.53f] as float[] 
groovy> rentVal.class 

Result: class [F

EDIT, it's enough to do this:

float[] a = [1.0f, 2.3f, 3.4f]

edited Oct 28, 2011 at 11:49

answered Oct 28, 2011 at 10:40

socha23

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5 Comments

socha23 Over a year ago

Yes, I've tried this in GroovyConsole. What result did you get?

Ray Over a year ago

Thanks much, I made a typo, what you gave did work. An additional question: is it a bug that Groovy doesn't allow for the standard Java syntax here?

socha23 Over a year ago

Also, you have to remember arrays in Groovy are really Lists. To cast them to primitive arrays, you have to use the as operator.

Ray Over a year ago

Thanks much Socha for the reference and also the explanation. I had thought Groovy was a pure superset of Java (syntax), but apparently this is not the case -- i.e. you can't use Java syntax in all cases.

tim_yates Over a year ago

@socha23 Arrays aren't Lists, String[] a = [ 'a', 'b', 'c' ] is perfectly valid groovy and will give you an array of String. It's just Groovy will give you lists unless you specifically ask for an Array

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