I need a function that has the basic functionality of the Print library, accepting different kinds of argument types and parsing them. However, I would like to then store the result in a string/char array. Does anybody know how I might utilize the Print library to do so?
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RTFM: arduino.cc/en/Reference/StringConstructorMajenko– Majenko2017-08-03 17:22:55 +00:00Commented Aug 3, 2017 at 17:22
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Sorry. I typically work in C. I didn't realize the string constructor was so robust. Thanks.mmiles19– mmiles192017-08-03 17:25:21 +00:00Commented Aug 3, 2017 at 17:25
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my StreamLib published in 2018 has CStringBuilderJuraj– Juraj ♦2021-10-08 18:35:22 +00:00Commented Oct 8, 2021 at 18:35
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1 Answer
You can get all the functionality of Print by creating your own class
that inherits from it. For this, you only need to implement the
size_t write(uint8_t) method that prints a single character. Here is a
simple class that inherits from both Print and String, i.e. you get
a String you can print() and println() into:
// A String you can print() and println() into.
class PrintString : public Print, public String
{
public:
PrintString() : String() {}
size_t write(uint8_t c) {
*this += (char) c;
return 1;
}
};
And here is how you could use it:
PrintString answer;
answer.print("The answer is ");
answer.println(42);
