Forums Technical Discussion VEX String: add space after each 3 letters?

VEX String: add space after each 3 letters?

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olivierth
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Hi!

Lets say I have a string:

jghweiauhoigafawgeu

But I want a space at every three letters like this:

jgh wei auh oig afa wge u

Any simple solution? My other option is a for loop but I'm curious to see a simpler way.

-Olivier
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alexwheezy
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string s = "jghweiauhoigafawgeu";
string new_str = join(re_findall("[a-z]{1,3}", s), " ");
Edited by alexwheezy - Oct. 30, 2024 13:26:31
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animatrix_
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Hi,

You can do this using regex easily:

string input = "jghweiauhoigafawgeu";
string result = join ( re_findall (".{1,3}", input ), " " );
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BabaJ
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Submitted - BUG #142040.

To review vex function web help page.

Update and review tags for all functions.

e.g. re_find() function - listed under strings section when filter drop down set to 'All tags' : But not listed under strings section when filter drop down set to strings(#of).
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olivierth
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Fantastic!

Can you explain exactly what
[a-z]{1,3}
and
.{1,3}
do exactly?

-Olivier
Edited by olivierth - Oct. 31, 2024 11:05:41
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ajz3d
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[a-z]{1,3}
Matches any consecutive occurrences of characters from "a" to "z" range (case-sensitive) one to three times. It's greedy, meaning that it will keep on matching until it finds a character outside of a-z range, or it finds three consecutive occurrences of a-z characters. In both cases it will start a new matching operation.

jGhw eia-uhoigafawgeufs
---
0-1	j
2-4	hw
5-8	eia
9-12	uho
12-15	iga
15-18	faw
18-21	geu
21-23	fs

.{1,3}
This is the same as above, but operates on any character (.). Note that it will match whitespace.

jGhw eia-uhoigafawgeufs
---
0-3	jGh
3-6	w e
6-9	ia-
9-12	uho
12-15	iga
15-18	faw
18-21	geu
21-23	fs
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olivierth
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Ah! Thanks for the full explanation. I apriciate that!

-Olivier
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