Similar to this question, what are the pro/cons to using const local variables like in this answer?
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Similar to this question, what are the pro/cons to using const local variables like in this answer?
Personally, I like to use
constfor any declared object (I’m not sure the word “variable” applies) unless I’m actually going to modify it. It documents to the reader that the value of the object is always going to be whatever it was initialized to, which can make the code easier to follow and analyze.(It can also help the compiler in some cases, but most compilers, when invoked in optimizing mode, are smart enough to notice that the object is never modified. And if you invoke the compiler in non-optimizing mode, you’re telling it that you don’t care much about performance.)
In fact, if I were going to design my own language, all declared objects would be
const(read-only) by default unless you explicitly mark them as modifiable.