# Defining array constant

**URL:** <https://www.ruby-forum.com/t/defining-array-constant/101589>\
**Category:** Ruby\
**Created:** [August 6, 2006, 3:01pm UTC](https://www.ruby-forum.com/t/defining-array-constant/101589 "2006-08-06T15:01:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\
**Post date:** [August 6, 2006, 3:01pm UTC](https://www.ruby-forum.com/t/defining-array-constant/101589/1 "2006-08-06T15:01:46Z")

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Hi,

I need to define two constant of array type, what is the recommended  
way to do that?

rb\_define\_const(module, “MASK”, …mask value…is float[4][4]);  
rb\_define\_const(module, “LIGHTTINT”, …color value…is float[3]);

I have seen example for string and integer but not for arrays.

Cheers

---

<div class="post-metadata">

**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\
**Post date:** [August 6, 2006, 3:16pm UTC](https://www.ruby-forum.com/t/defining-array-constant/101589/2 "2006-08-06T15:16:47Z")

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On Aug 6, 2006, at 9:00 AM, removed\_email\_address@domain.invalid wrote:

> Cheers

Look at README.EXT. Specifically rb\_ary\_new and friends.