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instance method

Range#===

rng === obj → true or false

static VALUE
range_eqq(VALUE range, VALUE val)
{
    VALUE ret = range_include_internal(range, val, 1);
    if (ret != Qundef) return ret;
    return r_cover_p(range, RANGE_BEG(range), RANGE_END(range), val);
}

Returns true if obj is between begin and end of range, false otherwise (same as cover?). Conveniently, === is the comparison operator used by case statements.

Example

case 79
when 1..50   then   puts "low"
when 51..75  then   puts "medium"
when 76..100 then   puts "high"
end
# Prints "high"

case "2.6.5"
when ..."2.4" then puts "EOL"
when "2.4"..."2.5" then puts "maintenance"
when "2.5"..."2.7" then puts "stable"
when "2.7".. then puts "upcoming"
end
# Prints "stable"

See also #== #as_json #% #begin also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1

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