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`cast`

Alters the data-type of the previous function without altering its output

Description

cast alters the data-type annotation for a pipe.

The contents of the pipeline are preserved, only the reported data-type is changed.

Additionally cast can be used to define the output type of a function.

Changing type annotation for a pipe

<stdin> -> cast data-type -> <stdout>

<stdin> :data-type: command

Defining the output type of a function

cast data-type

» out {"Array":[1,2,3],"Map":{"String": "Foobar","Number":123.456}} \
  -> cast json
{"Array":[1,2,3],"Map":{"String": "Foobar","Number":123.456}}

» out {"Array":[1,2,3],"Map":{"String": "Foobar","Number":123.456}} \
  -> :json: cat
{"Array":[1,2,3],"Map":{"String": "Foobar","Number":123.456}}

» function example {
    cast json
    out '{"foo": "bar"}'
}

» example -> debug -> [[ /Data-Type/Murex ]]
json

Please note you’d normally use the Object Builder to create JSON objects.

If you want to reformat the stdin into the new data type then use format instead.