Simple Debug

This is not an earth shattering revelation but a simple trick which should work in most cases.

Consider this:

int a = 19;
auto some_var_name_here = foo();

// typical log statements look like this
SPDLOG(DEBUG_LOG, " a = {}", a);
SPDLOG(DEBUG_LOG, " some_var_name_here = {}", some_var_name_here);

In the right mind you do a code review and find that you must refactor the code to rename some_var_name_here to var_name. So you do some clever find and replace which only replaces variable names and leaves string within "" untouched.

So now you have

// typical log statements look like this
SPDLOG(DEBUG_LOG, " a = {}", a);
SPDLOG(DEBUG_LOG, " some_var_name_here = {}", var_name);

Of course, reality is a bit more messy. So you can use preprocessor to help. You can use a global macro to print var names and values.

#define VAR_DEBUG(var) SPDLOG(DEBUG_LOG, #var " {}", (var))

As with all uses of macros you can shoot yourself in the feet and a lot of other body parts pretty easily. So use judgement!