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Jensen's Device: Difference between revisions
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This task is an exercise in [http://en.wikipedia.org/wiki/Call-by-name#Call_by_name call by name].
'''Jensen's Device''' is a computer programming technique devised by Danish computer scientist [http://en.wikipedia.org/wiki/Jørn_Jensen| Jørn Jensen] after studying the [[ALGOL 60]] Report.
The following program was proposed to illustrate the technique. It computes the 100th [http://en.wikipedia.org/wiki/Harmonic_number harmonic number]:
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