Check if a map contains a key?

[daandemeyer]

Is there a way to check if a map contains a specific key? I looked at the reference guide but couldn't find an example

[fbs]

kprobe:x 
/@map[key]/
{
  do something conditionally

something like this should work

[ulissesf]

I just checked that if the value stored in @Map[key] is a tuple it doesn't work, though. Any way to do that then? Thanks.

[yump]

I ran into this problem and solved it by checking @Map[key].0 != 0. Of course that's only possible if your tuple has at least one element where 0 isn't a valid value.