Macro nice_dbg 

macro_rules! nice_dbg {
    () => { ... };
    ($val:expr $(,)?) => { ... };
    ($($val:expr),+ $(,)?) => { ... };
}

Analogues to the dbg!() macro, but respecting the NICE_LOG environment variable and with all of the same logging features as the other nice_*!() macros. Like the nice_debug_assert*!() macros, this is only shown when compiling in debug mode, but the macro will still return the value in non-debug modes.