Today we’re looking at what are almost certainly the least used built-in functions in Go. This is why I’m covering it all in a single day, even though there’s enough material here to potentially justify two or three. Manipulating complex numbers Three functions assemble and disassemble complex numbers. The built-in function complex constructs a complex value from a floating-point real and imaginary part, while real and imag extract the real and imaginary parts of a complex value.
