How Can I Convert a C char Array to a Go Byte Array?

Converting C char Array to Go Byte Array

In Go, converting a C char array to a byte array can be achieved through different methods. One of the most straightforward approaches involves copying the char array to a Go slice, eliminating the need for specifying the array size explicitly.

mySlice := C.GoBytes(unsafe.Pointer(&C.my_buff), C.BUFF_SIZE)

Alternatively, to directly utilize the memory without making a copy, you can employ an unsafe.Pointer cast. This requires converting the slice to an array if an array type is required.

mySlice := unsafe.Slice((*byte)(unsafe.Pointer(&C.my_buf)), C.BUFF_SIZE)
myArray := ([C.BUFF_SIZE]byte)(mySlice)

Adopting either of these techniques allows you to effectively convert between C char arrays and Go byte arrays, facilitating the interoperability between the two languages.

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