Construct a variable from name and value and put it in the environment while saving the previous value of the environment variable into a global list so it can be restored later.
the name of the variable
the value of the variable
true on error, false on success
The D Programming Language's Unofficial Docs
beta
Construct a variable from name and value and put it in the environment while saving the previous value of the environment variable into a global list so it can be restored later.