[Solved] How can you create a hash with symbol keys where the values depend on a condition?For example, keys :a and :b with values 1 if even, else 0 for numbers 2 and 3 respectively. | Ruby

Ruby - Hashes

How can you create a hash with symbol keys where the values depend on a condition?
For example, keys :a and :b with values 1 if even, else 0 for numbers 2 and 3 respectively.

A{ :a => 2.even?, :b => 3.even? }

B{ a: (2.even? ? 1 : 0), b: (3.even? ? 1 : 0) }

C{ a: 2, b: 3 }

D{ a: if 2.even? then 1 else 0 end, b: if 3.even? then 1 else 0 end }

Step-by-Step Solution

Solution:

Step 1: Use ternary operator for conditional values
{ a: (2.even? ? 1 : 0), b: (3.even? ? 1 : 0) } uses condition ? true_value : false_value inline for each key's value.
Step 2: Check other options
{ :a => 2.even?, :b => 3.even? } assigns boolean values, C assigns numbers directly, D uses invalid syntax inside hash literal.
Final Answer:
{ a: (2.even? ? 1 : 0), b: (3.even? ? 1 : 0) } -> Option B
Quick Check:
Use ternary inside hash values for conditions [OK]

Quick Trick: Use ternary ?: inside hash values for conditions [OK]

Common Mistakes:

Using if/else statements directly inside hash literal
Assigning booleans instead of desired values
Not using parentheses for expressions

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How can you create a hash with symbol keys where the values depend on a condition?

Step 1: Use ternary operator for conditional values

Step 2: Check other options

Final Answer:

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