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Ruby Ternary operator

Ternary operator

Ternary operator logic uses "(condition) ? (true return value) : (false return value)" statements to shorten your if/else structures. It first evaluates an expression for a true or false value and then execute one of the two given statements depending upon the result of the evaluation. Here is the syntax :

test-expression ? if-true-expression : if-false-expression

Advantages of Ternary Logic :

  • Makes coding simple if/else logic quicker
  • Makes code shorter
  • Makes maintaining code quicker, easier

Example: Ruby ternary operator

# Example-1
var = 5;
var_is_greater_than_three = (var > 3 ? true : false);  
puts var_is_greater_than_three 

# Example-2
score= 50
result = score > 40 ? 'Pass' : 'Fail'
puts result
 
# Example-3
score = 10;
age = 22;
puts "Taking into account your age and score, you are : ",(age > 10 ? (score < 80 ? 'behind' : 'above average') : (score < 50 ? 'behind' : 'above average')); 

# Example-4
score = 81
puts "Based on your score, you are a ", (score > 80 ? "genius" :  "Not genius")

Output:

true
Pass
Taking into account your age and score, you are :
behind
Based on your score, you are a
genius

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