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Why can local variable names be reused?
Compliant Solution. When the block is small, the danger of reusing variable names is mitigated by the visibility of the immediate declaration. By using different variable names globally and locally, the compiler forces the developer to be more precise and descriptive with variable names.
Can you reuse variable names in different functions?
2 Answers. Therefore, in your case, the variables will be passed from the main driver to the individual functions by reference. So, yes, you can have variables of the same name in different scopes.
Will there be a problem if the calling and the called functions have variables with the same name?
You cant because if you have example(), ‘example’ is a pointer to that function. This is the right answer. There are function pointers, which are variables. So when you try to define your variable, there already exists a variable with the same name.
Can two functions declare variables with the same name?
Can two functions declare variables(non static) with the same name? Explanation: We can declare variables with the same name in two functions because their scope lies within the function.
Is it good or bad to reuse the variables?
In general for any language, if you reuse variable names, and then you decide to refactor part of your code into another method, you end up having to add or edit declarations. Suppose you take the second loop and move it to a print_cubes method. You will not be able to just cut and paste the for loop, as i will have no declaration there.
Why do you not reuse variables in unit tests?
If it is difficult to put the exact purpose for all re-uses in a short name, it is best to just use distinct variables. The biggest reason I don’t reuse variables (especially in unit tests) is because it introduces an unecessary code path, one that is hard to test and debug.
When do you reuse a variable in Java?
By reusing variables you are only reusing the name that points to a location in memory. Descriptive names on initializations can only win you clarity (Assuming Java and no primitive OCD). Unless you’re into code obfuscation by hand or irritating other developers.
Can a variable be re-used in a counting loop?
In some cases, the same variable name can be re-used; for example i in a simple counting loop. In these cases, you should of course make sure that the variables are in their own scope.