Last active
October 31, 2020 22:48
Star
You must be signed in to star a gist
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Rebol [ | |
name: enlist | |
purpose: "Format series to human readable list" | |
usage: [ | |
print enlist [] ;= none | |
print enlist [1] ;= just 1 | |
print enlist [1 2] ;= 1 and 2 | |
print enlist [1 2 3] ;= 1, 2 and 3 | |
] | |
note: https://gitter.im/red/help?at=5f9c02f906fa0513dd8119d1 | |
] | |
enlist: function [ | |
"Format series to human readable list" | |
block [block!] | |
][ | |
ajoin switch/default len: length? block [ | |
0 [[none]] | |
1 [["just " block/1]] | |
][ | |
i: 1 out: clear "" | |
loop len - 2 [ append append out block/(++ i) ", " ] | |
[out block/:i " and " block/:len] | |
] | |
] |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment