Bug in setParameter method if the parameter is boolean

[GiulioRomualdi]

I was trying to implement the python bindings for the YarpImplementation of the ParameterHandler. While I was writing the tests I noticed that there is a bug in the setParameter method when a boolean is passed as parameter.

Indeed when I try to call the getParameter method the following error is thrown

[2021-05-24 15:43:46.880] [thread: 71068] [blf] [error] [BipedalLocomotion::YarpUtilities::getElementFromSearchable] The value named: flag is not a bool.

https://github.com/dic-iit/bipedal-locomotion-framework/blob/baebbb6686585117d8bc3920cd8725416f116f7f/src/YarpUtilities/include/BipedalLocomotion/YarpUtilities/Helper.tpp#L79-L85

I also created a commit where the test in c++ fails 4561cea

Printing the content of the parameters handler I got the following string. Notice that flag is 1 and not True

(answer_to_the_ultimate_question_of_life 42) (pi 3.14000000000000012434) (John Smith) (flag 1) ("Fibonacci Numbers" (1 1 2 3 5 8 13 21))

This bug does not appear if the configuration is loaded in the configuration file.

cc @traversaro and @S-Dafarra

[traversaro]

I guess it is some problem of implicit overloading?

[S-Dafarra]

I would suggest checking if this happens also with direct yarp calls. I suspect that this is happening when converting a boolean to string with to_string inside yarp.

[GiulioRomualdi]

Indeed @S-Dafarra , the problem seems related to yarp: robotology/yarp#2584