Questions related to -0.0 and 0.0

General Usage
6

Thanks. Unfortunately, I got the below error when testing:

UndefVarError: t not defined
Stacktrace:
 [1] top-level scope
   @ In[129]:3
 [2] eval
   @ ./boot.jl:360 [inlined]
 [3] include_string(mapexpr::typeof(REPL.softscope), mod::Module, code::String, filename::String)
   @ Base ./loading.jl:1116