There are only two disadvantages to writing comments. First, and least important, is the column inches it may take up. Annoying, at best. Decent IDEs will collapse such a comment if asked.
Second, however, is that, like code, comments can become stale and therefore misleading or unhelpful. This is very serious. Comments must be updated as part of the code they describe should that code ever change. Because comments are code.
Not writing and maintaining comments is narcissistic and brazenly hostile to a) others who read your code trying to figure out what you meant to do and b) yourself down the road a few years should you have to do the same thing as (a).
By the way, not writing unit tests is also unforgivable and an "armed assault" on others just as is (a) above.
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There are only two disadvantages to writing comments. First, and least important, is the column inches it may take up. Annoying, at best. Decent IDEs will collapse such a comment if asked.
Second, however, is that, like code, comments can become stale and therefore misleading or unhelpful. This is very serious. Comments must be updated as part of the code they describe should that code ever change. Because comments are code.
Not writing and maintaining comments is narcissistic and brazenly hostile to a) others who read your code trying to figure out what you meant to do and b) yourself down the road a few years should you have to do the same thing as (a).
By the way, not writing unit tests is also unforgivable and an "armed assault" on others just as is (a) above.