Ruby - String Operations
Which of the following is the correct syntax to join an array
["a", "b", "c"] into a string separated by dashes in Ruby?Which of the following is the correct syntax to join an array ["a", "b", "c"] into a string separated by dashes in Ruby?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Identify the method to combine array elements
Thejoinmethod is used on arrays to create a string with a separator.Step 2: Check the syntax for join with a separator
The syntax isarray.join(separator), so["a", "b", "c"].join("-")is correct.Final Answer:
["a", "b", "c"].join("-") -> Option BQuick Check:
join(array) with separator = correct syntax [OK]
Quick Trick: Use array.join(separator) to combine elements [OK]
Common Mistakes:
- Using split instead of join to combine
- Calling join on a string instead of array
- Passing array as argument to split or join incorrectly
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