Named placeholders in string formatting

Question

In Python, when formatting string, I can fill placeholders by name rather than by position, like that:

print \"There\'s an incorrect value \'%(value)s\' in c         


        

Answer 1

I am the author of a small library that does exactly what you want:

Student student = new Student("Andrei", 30, "Male");

String studStr = template("#{id}\tName: #{st.getName}, Age: #{st.getAge}, Gender: #{st.getGender}")
                    .arg("id", 10)
                    .arg("st", student)
                    .format();
System.out.println(studStr);

Or you can chain the arguments:

String result = template("#{x} + #{y} = #{z}")
                    .args("x", 5, "y", 10, "z", 15)
                    .format();
System.out.println(result);

// Output: "5 + 10 = 15"