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for

lazy sequence comprehensions

Usage: (for [binding seq]* body) (for-each [binding seq]* body)

for builds a lazy sequence by iterating over one or more bindings. for-each evaluates the same comprehension for side effects and returns the final result.

An Example

(for ([x [1 2]]
      [y [10 20]])
  (+ x y))

This example lazily yields 11, 21, 12, and 22.