Ada 95 Quality and Style Guide Chapter 10

Chapter 10: Improving Performance - TOC - 10.4 DATA STRUCTURES

10.4.1 Dynamic Arrays

guideline

  • Use constrained arrays when measured performance indicates.

    • rationale

    If array bounds are not known until run-time, then calculations of these bounds may affect run-time performance. Using named constants or static expressions as array bounds may provide better performance than using variables or nonstatic expressions. Thus, if the values of Lower and Upper are not determined until run-time, then: 

    ... is array (Lower .. Upper) of ...

    may cause address and offset calculations to be delayed until run-time, introducing a performance penalty. See NASA (1992) for a detailed discussion of the tradeoffs and alternatives.

    < Previous Page Search Contents Index Next Page >
    1 2 3 4 5 6 7 8 9 10 11
    TOC TOC TOC TOC TOC TOC TOC TOC TOC TOC TOC
    Appendix References Bibliography