Nushell Niceties: Checking For Emptiness

To check if a value is empty you can use the is-empty command. The command can be used for string values, lists and records.
The opposite check to see if a value is not empty can be done with the is-not-empty command. Just like with the is-empty command this can be used for string values, lists and records. To check if values in a table column are not empty the names of the columns to check can be passed as argument.

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Nushell Niceties: Getting Column And Key Names

To get the names of columns in a table or the keys of a record you can use the columns command. The command returns a list of string values that are the column or key names. When the input is table the column names are returned, and when the input is a record the names of the keys are returned.

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