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

VEX String: add space after each 3 letters?

   758   6   1
User Avatar
olivierth
Member
1074 posts
Joined: April 2017
Offline
 
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
 Report
User Avatar
alexwheezy
Member
297 posts
Joined: Jan. 2013
Offline
 
string s = "jghweiauhoigafawgeu";
string new_str = join(re_findall("[a-z]{1,3}", s), " ");
Edited by alexwheezy - Oct. 30, 2024 13:26:31
 Report
User Avatar
animatrix_
Member
4685 posts
Joined: Feb. 2012
Offline
 
Hi,

You can do this using regex easily:

string input = "jghweiauhoigafawgeu";
string result = join ( re_findall (".{1,3}", input ), " " );
Senior FX TD @ Industrial Light & Magic
Get to the NEXT level in Houdini & VEX with Pragmatic VEX! [www.pragmatic-vfx.com]

youtube.com/@pragmaticvfx | patreon.com/animatrix | pragmaticvfx.gumroad.com
 Report
User Avatar
BabaJ
Member
2126 posts
Joined: Sept. 2015
Offline
 
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).
 Report
User Avatar
olivierth
Member
1074 posts
Joined: April 2017
Offline
 
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
 Report
User Avatar
ajz3d
Member
570 posts
Joined: Aug. 2014
Offline
 
[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
 Report
User Avatar
olivierth
Member
1074 posts
Joined: April 2017
Offline
 
Ah! Thanks for the full explanation. I apriciate that!

-Olivier
 Report
  • Quick Links