How can you create a Proc that accepts any number of arguments and returns their sum?

hard📝 Application Q9 of 15

Ruby - Blocks, Procs, and Lambdas

Asum_proc = proc { args.sum }

Bsum_proc = proc { |args| args.sum }

Csum_proc = proc { |*args| args.sum }

Dsum_proc = proc { |args| args.reduce(:+) }

Step-by-Step Solution

Solution:

Step 1: Understand how to accept variable arguments
Using |*args| allows the Proc to accept any number of arguments as an array.
Step 2: Sum the arguments
Calling args.sum returns the sum of all arguments.
Step 3: Check each option
Only sum_proc = proc { |*args| args.sum } correctly uses |*args| to accept multiple arguments and sums them.
Final Answer:
sum_proc = proc { |*args| args.sum } -> Option C
Quick Check:
Proc with splat args sums correctly = sum_proc = proc { |*args| args.sum } [OK]

Quick Trick: Use *args to accept any number of arguments in Proc [OK]

Common Mistakes:

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