在 Scala 中使用键值对创建数据框

Question

As I am new to scala need to convert following code in scala which i written in python

Dict={"test1":"date","test2":"string"}

for x in Dict.keys():
    column= x
    type = Dict[x]
    print (column)
    print (type)

output

test1
date
test2
string

Answer 1

you can use

Map(collection of key/value pairs)

in Scala . See Scala Maps

 val testMap  = Map("test1" -> "Date", "test2" -> "String" ) 

Iterate over Key/Value pairs

 for ((key,value) <- testMap) println(s"key: $value, value: $value\n")

Conversion to DF

val df = testMap.toSeq.toDF("name", "dataType")
df.show()