jaA sophisticated yet simply way to build a JSON array
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.
Please note that while this builtin is not marked for
deprecation, it has been superseded by the %[]
tokens. (read more)
ja [start..end] -> <stdout>
ja [start..end.base] -> <stdout>
ja [start..end,start..end] -> <stdout>
ja [start..end][start..end] -> <stdout>
» 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.
Please read the documentation on a for a more detailed
breakdown on of ja’s supported features.
mtac:
Reverse the order of an arraycount: Count
items in a map, list or arrayta: A
sophisticated yet simple way to build an array of a user defined
data-typea: A sophisticated yet simple way to stream an array or
list (mkarray)[ ..Range ]: Outputs a ranged subset of data from
stdin[ Index ]: Outputs an element from an array, map or
table[[ Element ]]: Outputs an element from a nested
structure%[] Array
Builder: Quickly generate arrays%[] Array
Builder: Quickly generate arrays%{} Object
Builder: Quickly generate objects (dictionaries / maps)json: JavaScript Object
Notation (JSON)This document was generated from builtins/core/mkarray/array_doc.yaml.
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Last built on Fri Oct 24 08:59:31 UTC 2025 against commit e59ab49e59ab49e1628d8546d2ad8ce5eb1150445f6a940.
Current version is 7.1.4143 (unknown) which has been verified against tests cases.