Feature 2673 sonarqube beta3 namespace

[hsoh-u]

Expected Differences

• Moved down the using namespace statements below #include statements at *cc files (Move namespace specifications below include directives #2696 ).

• Removed "using namespace" statements from header files (Move namespace specifications below include directives #2696 )

• Added the namespace into header files, for example (string to std::string)

• Do these changes introduce new tools, command line arguments, or configuration file options? [No]
  
  If yes, please describe:
  

• Do these changes modify the structure of existing or add new output data types (e.g. statistic line types or NetCDF variables)? [No]
  
  If yes, please describe:
  

Pull Request Testing

• Describe testing already performed for these changes:
  
  Ran the unit test and compare the output of the nighty build

Checking using namespace statement at the header files

 find src -type f -name "*h" -o -name "*hpp"  -exec grep -nH -A 4 "using namespace" {} \;

Few cases are not fixed. They may be the generated codes.

find src -type f -name "*h" -o -name "*hpp" -o -name "*cc"  -exec grep -nH -A 4 "using namespace" {} \; | grep include |  less

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [No]

• Do these changes include sufficient testing updates? [No]

• Will this PR result in changes to the test suite? [No]
  
  If yes, describe the new output and/or changes to the existing output:
  

• Please complete this pull request review by [Fill in date].
  

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[jprestop]

Thank you for this work, @hsoh-u. Would you say that this PR also covers the work described in this issue Move namespace specifications below include directives #2696? If so, let's link in this issue under "Development" as well, and thanks for doing the work I had planned to do, but had not gotten to yet!

[hsoh-u]

Added it to "Expected Differences". I can not add #2696 to Development. Typing 269 shows 2697 only and typing move does not work.

[jprestop]

@hsoh-u, thank you for your work on this and for running the unit tests and comparing the output of the nighty build. Thank you also for noting that a few cases are not fixed and that they may be generated code. I'm not sure what the problem was with adding #2696 to "Development", but I was able to add it without any trouble. Thanks for adding it to Expected Difference, in case we couldn't get it to work. I approve this pull request.