String[] java interop issue

[jpr...@free.fr]

Hi all, I'm trying to pass a String[] to a java method (to fill a SWT Combo), but the method described in the doc seems broken: // Java public class JavaType {     public void takeThisArray(String[] arr){} } // Ceylon

void doTest() {     JavaType t = JavaType();     Array<String> a = array({"One", "Two", "Three"});     t.takeThisArray(a); } The compiler reports:   argument must be assignable to parameter arr of takeThisArray: Array<String> is not assignable to ObjectArray<String>? NB: I added braces to array() arguments. Any idea ?

[Stephane Epardaud]

Arg, yes I need to update the docs, I'll do it right away sorry about that. You should try:

import java.lang { ObjectArray, arrays }

void doTest() {
    JavaType t = JavaType();

    ObjectArray<String> a = arrays.toJavaStringArray{"One", "Two", "Three"};
    t.takeThisArray(a);
}

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Stéphane Épardaud

[jpr...@free.fr]

[jpr...@free.fr]

Well, I supposed this method was quite new, so I updated ceylon to git head, but now it doesn't compile - ceylon-sdk compilation fails...
(and sorry for last (empty) message, it was a dummy click).

[Stephane Epardaud]

No don't worry the code I gave you works on M5.

[jpr...@free.fr]

Well, I just tried this code on ceylon 0.5 (fresh install in a fresh VM), and the compiler complained:

/home/jpragey/workspace/CeylonTest/source/org/jpragey/test/run.ceylon:6: error: specified expression must be assignable to declared type of a: java.lang::ObjectArray<java.lang::String> is not assignable to java.lang::ObjectArray<ceylon.language::String>

    ObjectArray<String> a = arrays.toJavaStringArray{"One", "Two", "Three"};

                          ^
/home/jpragey/workspace/CeylonTest/source/org/jpragey/test/run.ceylon:7: error: argument must be assignable to parameter arr of takeThisArray: ObjectArray<String> is not assignable to ObjectArray<String>?
    t.takeThisArray(a);

[Stephane Epardaud]

Sorry let's try again:

import java.lang { ObjectArray, arrays, JavaString = String }

void doTest() {
    JavaType t = JavaType();

    ObjectArray<JavaString> a = arrays.toJavaStringArray{"One", "Two", "Three"};
    t.takeThisArray(a);
}

[jpr...@free.fr]

Cool! It works in 0.5 and (more or less current) git head.
Thanks Stéphane!

[Stephane Epardaud]

I've updated http://ceylon-lang.org/documentation/1.0/reference/interoperability/java-from-ceylon/#java_array_types_milestone_5 with all the info you will need WRT Java arrays.