Below, I am trying to extract a Tweet JSON field retweeted_status
. I check if the JSON contains the field and then use Try
to extract it. I would like to assign the extracted value on success to the var retweet_count
and on failure, assign retweet_count
as 0. But when I try this case Success(result)=> retweet_count = result
I get a mismatch error stating that BigInt cannot match with Unit.
Printing out the class of retweeted_favorite_count2
I get scala.runtime.BoxedUnit
. What is the work around this?
var retweet_count: BigInt= 0
if (value.has("retweeted_status")){
val retweeted_favorite_count0 = value\"retweeted_status"\"favorite_count"
val retweeted_favorite_count1 = Try(retweet_count=retweeted_favorite_count0.extract[BigInt])
val retweeted_favorite_count2 = retweeted_favorite_count1 match {
case Success(result)=> result
case Failure(exception)=> 0
case _=> 0
}
println(" retweeted_favorite_count2"+ retweeted_favorite_count2.getClass )
The contents of your Try
is an assignment: retweet_count=...
Assignments have no meaningful return value so the result
in Success(result)
is not an Int
.
You can get around this by making the assignment after assessing the Try
.
val retweeted_favorite_count2 =
Try(retweeted_favorite_count0.extract[BigInt]) match {
case Success(result)=>
retweet_count = result
result
case Failure(_)=> 0
}
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