I want to understand when we need to write code like below ? i want to know purpose of it ?

Qt embedded developer

can any body explain me below code ?

    std::vector<unsigned char> VectorResponseData;
    VectorResponseData = txnContext->getPrivateData(); // may be json data
    std::string StrReSponseData(VectorResponseData.begin(),VectorResponseData.end());

JonB

@Qt-embedded-developer
What is there to ask? It gets an array of unsigned char into a std::vector, and then builds a std::string out of all the characters.

Qt embedded developer

@JonB i want to know when we need to do this type of conversation in real time ?

is it used for dynamic array data to store into string format ?

Christian Ehrlicher

@Qt-embedded-developer said in I want to understand when we need to write code like below ? i want to know purpose of it ?:

in real time ?

What should this mean?

is it used for dynamic array data to store into string format ?

No, it copies al elements from VectorResponseData.begin() to VectorResponseData.end() into a std::string as explained in the documentation (7. ctor) ...