Technical Discussion

Break down the performance differences when passing massive data structures by value versus passing a simple pointer

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2 answers published. Last candidate submission on Jul 19 2026, 9:16am PDT. Interview question asked to Software Engineers interviewing at Tumblr Inc., Venmo, Illumina and other companies. Original question asked: Break down the performance differences when passing massive data structures by value versus passing a simple pointer. Question last reported by a candidate interviewing at Datadog for a Software Engineer interview on May 31 2026, 11:28am PDT.