FirstOrDefault stage

FirstOrDefault is the operation that returns first object from the sequence or null if the sequence is empty.

FirstOrDefaultStage syntax

FirstOrDefaultStage
  : 'firstOrDefault' '(' LambdaExpression? ')'  
  ;

Related tokens
LambdaExpression

FirstOrDefault examples

1. Find a table cell with the text 'Alex'. Returns null if not found.

   select(tableCells) // PdfTableCell[]
       ->firstOrDefault((item) => item.Text() == 'Alex') // PdfTableCell?