3.conversion&input

Basic Types
    Integers
        Signed
            int
            int8
            int16 
            int32 
            int64
        Unsigned
            uint
            uint8
            uint16
            uint32
            uint64
            uintptr
    Floats
        float32
        float64
    Complex Numbers
        complex64
        complex128
    Byte
    Rune
    String
    Boolean
Composite Types
    Collection/Aggregation or Non-Reference Types
        Arrays
        Structs
    Reference Types
        Slices
        Maps
        Channels
        Pointers
        Function/Methods
    Interface
        Special case of empty Interface