Created
January 6, 2017 15:47
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An example of a side effect that makes a program hard to reason about
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| // The result of the 'exampleFunction' is difficult to reason about. | |
| let n = 10; | |
| // function with a side effect | |
| const exampleFunction = function ( i ) { | |
| return n = n + i; | |
| }; | |
| exampleFunction( 2 ); // result is 12 | |
| // if we run the function again.. | |
| exampleFunction( 2 ); // result is 14 | |
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