Use hashmap in expression for std:foreach loop

[Jonathan Nagulesan]

Dear TeaVM team,

Do you know if a hashmap can be used in a std:foreach loop?.

<std:foreach var="optName2" index="r" in="Arrays.asList(mpStrMultiChoice.get(p))">
</std:foreach>

The p is the index of an outer std:for each loop. The p is used as a key in the hashmap to extract a string array that is converted to a list via "Arrays.toList".

I use the following imports in the html template:

<?import java.util.Arrays?>
<?import java.util.Map?>
<?import java.util.HashMap?>

mpStrMultiChoice is a hashmap defined in the class file:

public Map<Integer,String[]> mpStrMultiChoice = new HashMap<>();

I get the error when compiling:

 Method get(java.lang.Object) is not applicable to given arguments

Thanks.

[Jonathan Nagulesan]

Never mind have figured out what to do to get it to work.

<std:foreach var="optName2" index="r" in="Arrays.asList(mpStrMultiChoice.get((Integer)p))">
<option html:value="optName2"><html:text value="optName2"></option>
</std:foreach>

I have to type cast the index to type (Integer). 

Regards,

Jonathan

[ScraM Team]

I'm glad that worked!  Thanks for letting us know.

While it sounds like you got it working, there is a neat Minesweeper example with double-nested foreach loops here in case someone else wants a related example:

https://github.com/konsoletyper/teavm-flavour-minesweeper/blob/master/src/main/resources/templates/minesweeper.html