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murex Shell Docs

Command Reference: ja (mkarray)

A sophisticated yet simply way to build a JSON array

Description

murex has a pretty sophisticated builtin for generating JSON arrays. It works a little bit like Bash’s {1..9} syntax but includes a few additional nifty features.

Usage

ja: [start..end] -> <stdout>
ja: [start..end.base] -> <stdout>
ja: [start..end,start..end] -> <stdout>
ja: [start..end][start..end] -> <stdout>

Examples

» ja: [1..5]
[
    "1",
    "2",
    "3",
    "4",
    "5"
]

» ja: [Monday..Sunday]
[
    "Monday",
    "Tuesday",
    "Wednesday",
    "Thursday",
    "Friday",
    "Saturday",
    "Sunday"
]

Please note that as per the first example, all arrays generated by ja are arrays of strings - even if you’re command is ranging over integers.

Detail

Please read the documentation on a for a more detailed breakdown on of ja’s supported features.

See Also

• commands/@[ (range): Outputs a ranged subset of data from STDIN
• commands/[[ (element): Outputs an element from a nested structure
• commands/[ (index): Outputs an element from an array, map or table
• commands/a (mkarray): A sophisticated yet simple way to build an array or list
• commands/count: Count items in a map, list or array
• types/json: JavaScript Object Notation (JSON) (primitive)
• commands/mtac: Reverse the order of an array
• commands/ta (mkarray): A sophisticated yet simple way to build an array of a user defined data-type