Checking if a collection is null or empty in Groovy

Question

I need to perform a null or empty check on a collection  I think that  members  empty is incorrect   Is there a groovier way to write the following  if  members  amp  amp   members empty           Some Work

User · Answer

FYI this kind of code works  you can find it ugly  it is your right         def list   null list each   println it   soSomething     In other words  this code has null empty checks both useless   if  members  amp  amp   members empty        members each   doAnotherThing it      def doAnotherThing def member         Some work

User · Answer

There is indeed a Groovier Way   if members         Some work     does everything if members is a collection  Null check as well as empty check  Empty collections are coerced to false   Hail Groovy Truth

User · Answer

members find     I think now the best way to solve this issue is code above  It works since Groovy 1 8 1 http   docs groovy-lang org docs next html groovy-jdk java util Collection html find    Examples   def lst1      assert  lst1 find    def lst2    null  assert  lst2 find    def lst3    null 2 null  assert lst3 find    def lst4    null null null  assert  lst4 find    def lst5    null  0  0 0  false          42  43  assert lst5 find      42  def lst6   null   assert  lst6 find

[grails] Checking if a collection is null or empty in Groovy

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