issue with map and [] operator

Question

Hi

Refer code below:
https://www.sololearn.com/en/compiler-playground/cu5ZgEHv7zkm

It is an obvious that map[key] adds new element to map with {key, default value} to map if key is not found. Due to this, cannot use const map ref. Even though I type casted to get rid off the constant, it compiles but still modifies map as expected.

To avoid modification was main purpose to use const map ref in a function. To achieve this, I created a test2 method instead of test method.

Is there a better way to obtain result apart from test2 method or map.find?

Answer 1

<std::map> doesn't have a const version of <operator[]>, try <std::map::at>.

Answer 2

Thanks