[
(index)Outputs an element from an array, map or table
Outputs an element or multiple elements from an array, map or table.
Please note that indexes in murex are counted from zero.
<stdin> -> [ element ] -> <stdout>
$variable[ element ] -> <stdout>
<stdin> -> ![ element ] -> <stdout>
Return the 2nd (1), 4th (3) and 6th (5) element in an array:
» ja [0..9] -> [ 1 3 5 ]
[
"1",
"3",
"5"
]
Return the data-type and description of config shell syntax-highlighting:
» config -> [[ /shell/syntax-highlighting ]] -> [ Data-Type Description ]
[
"bool",
"Syntax highlighting of murex code when in the interactive shell"
]
Return all elements except for 1 (2nd), 3 (4th) and 5 (6th):
» a: [0..9]-> ![ 1 3 5 ]
0
2
4
6
7
8
9
Return all elements except for the data-type and description:
» config -> [[ /shell/syntax-highlighting ]] -> ![ Data-Type Description ]
{
"Default": true,
"Dynamic": false,
"Global": true,
"Value": true
}
Return the top 5 processes from ps
, ordered by memory usage:
» ps aux -> [PID %MEM COMMAND] -> sort -nrk2 -> [..5]
915961 14.4 /home/lau/dev/go/bin/gopls
916184 4.4 /opt/visual-studio-code/code
108025 2.9 /usr/lib/firefox/firefox
1036 2.4 /usr/lib/baloo_file
915710 1.9 /opt/visual-studio-code/code
Return the 1st and 30th row:
» ps aux -> [*1 *30]
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 37 0.0 0.0 0 0 ? I< Dec18 0:00 [kworker/3:0H-events_highpri]
Return the 1st and 5th column:
» ps aux -> [*A *E] -> head -n5
USER VSZ
root 168284
root 0
root 0
root 0
Indexes in murex behave like any other computer array in that all arrays start from zero (0
).
As demonstrated in the examples above, [
specifies elements to include where as ![
specifies elements to exclude.
By default, index generates an error if an element doesn’t exist. However you can disable this behavior in config
» config -> [ foobar ]
Error in `[` ((builtin) 2,11): Key 'foobar' not found
» config set index silent true
» config -> [ foobar ]
[
![
index
[[
(element): Outputs an element from a nested structure[
(range): Outputs a ranged subset of data from STDINa
(mkarray): A sophisticated yet simple way to build an array or listconfig
: Query or define murex runtime settingscount
: Count items in a map, list or arrayja
(mkarray): A sophisticated yet simply way to build a JSON arraymtac
: Reverse the order of an arrayThis site's content is rebuilt automatically from murex's source code after each merge to the master
branch. Downloadable murex binaries are also built with the website.
Last built on Mon Feb 13 09:18:06 UTC 2023 against commit f339958f33995895c1d997efcdbb8408d2c8d45f8b5f934.
Current version is which has been verified against 13950 tests cases.