core :: Text :: is_dec
true
assert "10839".is_dec == true assert "164F".is_dec == false
# Returns `true` if the string contains only Decimal digits # # ~~~ # assert "10839".is_dec == true # assert "164F".is_dec == false # ~~~ fun is_dec: Bool do for i in chars do if i < '0' or i > '9' then return false return true end