What is the time and space complexity of Curry with Placeholder?

Time complexity: O(n) per partial call for merging. Space complexity: O(n) where n is the number of arguments.

Curry with Placeholder

Hard

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Solution Guide: Curry with Placeholder

Approach

Extend basic currying with a placeholder symbol that marks positions for deferred arguments. On each partial call, merge new arguments into placeholder positions from the previous call. Continue until all positions hold real values and the required arity is met.

Complexity Analysis

Time: O(n) per partial call for merging
Space: O(n) where n is the number of arguments

Pattern

Advanced Curry Pattern

Why It Works

The placeholder symbol acts as a sentinel value that can be detected and replaced during argument merging, allowing arguments to be supplied in any order across multiple partial applications.

Updated Mar 2026