code guest register log in programs messages repl prompts data documentation source about privacy terms /up french production

twenty_one?

Decimal
examples
twenty one check
input
-2.0.twenty_one?
result
false
twenty one check
input
-2.1.twenty_one?
result
false
twenty one check
input
-1.0.twenty_one?
result
false
twenty one check
input
-1.1.twenty_one?
result
false
minus zero point one twenty one check
input
-0.1.twenty_one?
result
false
zero zero twenty one check
input
0.0.twenty_one?
result
false
minus zero point one check
input
-0.1.twenty_one?
result
false
one point zero twenty one check
input
1.0.twenty_one?
result
false
minus one point one check
input
-1.1.twenty_one?
result
false
minus two point zero twenty one check
input
-2.0.twenty_one?
result
false
two point one twenty one check
input
2.1.twenty_one?
result
false
twenty_one check
input
21.0.twenty_one?
result
true
twenty one point one check
input
21.1.twenty_one?
result
false