Libsmart The C++ system development library

The argument scanner (the module smart/util/argscan) introduced a namespace named ArgScan in the global scope to support the exetension of user defined converters/setters.

We had to change the name of the namespace to fix a conflict situation with the local namespace smart::util::ArgScan.

So, to keep your code running, put all your set() functions in the ArgScanExt namespace instead of the ArgScan namespace.