if statement - In scala, check non nullity and apply method directly? -

with following definitions:

class test {   var activated: boolean = false }  def maybetest(): test = {   if(...) {     val res = new test     if(...) res.activated = true   } else null } 

i having lot of if structures one:

val myobject = maybetest() if(myobject != null && myobject.activated) {   // not care object } 

i condensate little bit. there nice way define/write avoid nullpointerexception:

if(maybetest() &&> (_.activated)) {   ... } 

what best way of achieving in scala?

you can wrap such code in option this:

class test(num: int) {   def somenum = num }  val test: test = null option(test).map(t => t.somenum) 

in example if variable null none, otherwise work some(value)

update

if don't want use option, can define such function

class test(num: int) {   def give = num }  def ifdefandtrue[t, k](obj: t)(iftrue: t => boolean)(then: => k) {   if (obj != null && iftrue(obj))     } 

in case this:

val test = new test // assuming activated false  ifdefandtrue(test)(_.activate) {   println("results in unit") } 

but contains side effect , not functional