Views on Design By Contract or code contract -

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i reading understand more design contract / code contract.

as know, write contracts (invariants, pre , post conditions) ensure codes can maintain orderly. guarantees bugs prevented defined mechanism based on checks , balances

but wouldnt implicated software performance? there additional checks between each method calls.

i appreciate people share views , experience design contract me. disadvantages or advantages welcome.

typically such frameworks support runtime checks , static ananlysis. latter performed @ compile time (or before); not slow down code @ all. former potentially affect performance.

the microsoft research code contracts project nice example of this. can configure system such that:

  • static analysis applies subset of possible contract enforcement @ compile time, or within deigner environment;

  • runtime checks enabled code compiled in debug mode; and

  • a subset of runtime checks enabled public api of code compiled in release mode (non-public code has no runtime checks).

this compromise between performance , robustness.


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