How to convert from byte to int in Go Programming

Question

I need to create a client-server example over TCP  In the client side I read 2 numbers and I send them to the server  The problem I faced is that I can t convert from   byte to int  because the communication accept only data of type   byte   Is there any way to convert   byte to int or I can send int to the server   Some sample code will be really appreciated   Thanks

User · Answer

If   byte is ASCII byte numbers then first convert the   byte to string and use the strconv package Atoi method which convert string to int   package main import        fmt       strconv     func main         byteNumber      byte  14       byteToInt       strconv Atoi string byteNumber       fmt Println byteToInt      go playground - https   play golang org p gEzxva8-BGP

User · Answer

var bs   byte value       strconv ParseInt string bs   10  64

User · Answer

reposting this answer   You can use encoding binary s ByteOrder to do this for 16  32  64 bit types  Play  package main  import  fmt  import  encoding binary   func main         var mySlice     byte 244  244  244  244  244  244  244  244      data    binary BigEndian Uint64 mySlice      fmt Println data

User · Answer

now      byte 0xFF 0xFF 0xFF 0xFF  nowBuffer    bytes NewReader now  var  nowVar uint32 binary Read nowBuffer binary BigEndian  amp nowVar  fmt Println nowVar   4294967295

User · Answer

For encoding decoding numbers to from byte sequences  there s the encoding binary package  There are examples in the documentation  see the Examples section in the table of contents   These encoding functions operate on io Writer interfaces  The net TCPConn type implements io Writer  so you can write read directly to network connections   If you ve got a Go program on either side of the connection  you may want to look at using encoding gob  See the article  Gobs of data  for a walkthrough of using gob  skip to the bottom to see a self-contained example

User · Answer

Starting from a byte array you can use the binary package to do the conversions   For example if you want to read ints    buf    bytes NewBuffer b     b is   byte myfirstint  err    binary ReadVarint buf  anotherint  err    binary ReadVarint buf    The same package allows the reading of unsigned int or floats  with the desired byte orders  using the general Read function

[tcp] How to convert from []byte to int in Go Programming

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