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Impact of Limited Memory Resources

Binkley, D. ; Lawrie, D. ; Maex, S. ; Morrell, C.

2008 16th IEEE International Conference on Program Comprehension, 2008, p.83-92

IEEE

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  • Título:
    Impact of Limited Memory Resources
  • Autor: Binkley, D. ; Lawrie, D. ; Maex, S. ; Morrell, C.
  • Assuntos: Computer languages ; Educational institutions ; Humans ; identifier names ; memory ; Natural languages ; Object oriented modeling ; Production ; program comprehension ; Programming profession ; Proposals ; USA Councils ; Vocabulary
  • É parte de: 2008 16th IEEE International Conference on Program Comprehension, 2008, p.83-92
  • Descrição: Since early variable mnemonics were limited to as few as six to eight characters, many early programmers abbreviated concepts in their variable names. The past thirty years has seen a steady increase in permitted name length and, slowly, an increase in the actual length of identifiers. However, in theory names can be too long. Most obviously, in object-oriented programs, names often involve chaining of method calls and field selectors (e.g., class.firstAssignment().name.trim()). While longer names bring the potential for easier comprehension through more embedded sub-words, there are practical limits to length given limited human memory resources. The central hypothesis studied herein is that names used in modern programs have reached this limit. Statistical models derived from an experiment involving 158 programmers of varying degrees of experience show that longer names extracted from production code take more time to process and reduce correctness in a simple recall activity. This has clear negative implications for any attempt to read, and hence comprehend or manipulate, the source code of modern software. The experiment also evaluates the advantage of identifiers having ties to a programmer's persistent memory. Combined these results reinforce past proposals advocating the use of limited, consistent, and regular vocabulary in identifier names. In particular, good naming limits length and reduces the need for specialized vocabulary.
  • Editor: IEEE
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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