Groovy GroupBy field with and without white spaces

Question

I have invoices list as below

def invoices = [
\'LEDES98BI V2\',
\'LINE|INVOICE_DATE|INVOICE_NUMBER|INVOICE_TOTAL\',
\'1|20150301|INV-Error_Test1|22\',
\'2|2         


        

Answer 1

You just need to quote your name, like this

def invoiceMap = lines.tail().collect{ [heads, it].transpose().collectEntries() }.groupBy{ it.'INVOICE NUMBER' }