(move: …VariableToValue) → Instant
A variant of (put:) that deletes the source value after copying it - in effect moving the value from the source to the destination.
(move: $arr's 1st into $var)
You'll often use data structures such as array or datamap as storage for values that you'll only use once, such as a list of names to print out. When it comes time to use them, you can remove it from the structure and retrieve it in one go.
You can also set multiple variables in a single (move:) by separating each VariableToValue
(move: $a's 1st into $b, $a's 2nd into $c), etc.
If the value you're accessing cannot be removed - for instance, if it's an array's
then an error will be produced.