principles:high_cohesion
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principles:high_cohesion [2019-05-29 14:50] 154.114.16.134 [Examples] |
principles:high_cohesion [2019-05-29 15:09] christian old revision restored (2016-09-03 22:52) |
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| The cohesion of a module is a measure for how well the internal parts of a module (e.g. the methods and attributes of a class) belong together. Having a high cohesion means, that a module should only comprise responsibilities which belong together. | The cohesion of a module is a measure for how well the internal parts of a module (e.g. the methods and attributes of a class) belong together. Having a high cohesion means, that a module should only comprise responsibilities which belong together. | ||
| - | Several kinds of cohesion can be distinguished some of which are strong and some of which are loose. So strong forms of coupling should be preferred. | + | Several kinds of cohesion can be distinguished some of which are strong and some of which are loose. So strong forms of coupling should be preferred: FIXME add explanation of cohesion types |
| ===== Rationale ===== | ===== Rationale ===== | ||
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| + | ===== Strategies ===== | ||
| + | * Divide one large module into several smaller but more cohesive ones | ||
| ===== Caveats ===== | ===== Caveats ===== | ||
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| ===== Origin ===== | ===== Origin ===== | ||
| - | W. P. Stevens, G. van Niekerk, G. J. Myers, L. L. Constantine: //Structured design// | + | W. P. Stevens, G. J. Myers, L. L. Constantine: //Structured design// |
| ===== Evidence ===== | ===== Evidence ===== | ||
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| ===== Examples ===== | ===== Examples ===== | ||
| - | The donkey is good. The site is not working | ||
principles/high_cohesion.txt · Last modified: 2019-05-29 15:09 by christian
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