BigBinary Blog
We write about Ruby on Rails, React.js, React Native, remote work, open source, engineering and design.
Ruby 2.4 deprecated constants TRUE, FALSE & NIL
This blog is part of our Ruby 2.4 series.
Ruby has top level constants
like TRUE, FALSE and NIL.
These constants
are just synonyms
for true, false and nil
respectively.
In Ruby 2.4, these constants are deprecated and will be removed in future version.
1# Ruby 2.3
2
32.3.1 :001 > TRUE
4 => true
52.3.1 :002 > FALSE
6 => false
72.3.1 :003 > NIL
8 => nil1# Ruby 2.4
2
32.4.0 :001 > TRUE
4(irb):1: warning: constant ::TRUE is deprecated
5 => true
62.4.0 :002 > FALSE
7(irb):2: warning: constant ::FALSE is deprecated
8 => false
92.4.0 :003 > NIL
10(irb):3: warning: constant ::NIL is deprecated
11 => nil