GoLang: Quick gist on Difference between Marshal, Unmarshal, Encoder and Decoder

By Raaz -
Summary: Marshal, Unmarshal and Encode, Decode

Summary: Marshal, Unmarshal and Encode, Decode

  • Marshal: Convert struct/map interface data into JSON.
  • Unmarshal: Convert JSON data into struct/map

If reading from a file involved, then you read it in []byte format. To read from a file

  • using os.Open open the file.

  • then read all the data using io.ReadAll method.

  • Encoder and Decoder kind of do reading/writing internally. More like a simplified version of Marshal and Unmarshal.

  • Encoder converts the struct/map into JSON and automatically writes into io.Writer

  • Decoder reads from io.Writer and convert the JSON data into struct/map interface.

If there is a byte slice to work with, use Marshal and Unmarshal. If there is an io.Writer or an io.Reader, use Encode and Decode.

Ref: https://blog.devgenius.io/to-unmarshal-or-to-decode-json-processing-in-go-explained-e92fab5b648f

Comments

Post a Comment

Popular posts from this blog

grep: unknown device method

By Raaz -
Today while using grep command via rundeck I was through grep: unknown device method  error. And the reason is due to I am having ' - ' in my search pattern I was through this error. I mean search includes grep "-search.this" /path/to/file Then you may get error with grep. So remove ' - ' in pattern and repeat your search. grep "search.this" /path/to/file Hope that helps.
Read more

Uploading files to FTP/SFTP using CURL

By Raaz -
Hello, Today I am writing below article which can help you to upload files to SFTP/FTP by using CURL. Ok why we need that ? Let me tell explain!! How we login into SFTP/FTP ? [root@virt03 test]# sftp 192.168.56.110 Connecting to 192.168.56.110... root@192.168.56.110's password: sftp> ls anaconda-ks.cfg       nodes                 post-install          post-install.log sftp> exit and uploading files with put command. Its a lengthy way. So recently I have gone through few articles and with some R&D I have modified it as script and command-line argument support.So you can call the script with filename as argument.  So Lets do this!!! Command 1 : This is for uploading a single to SFTP/FTP by using CURL.  SFTP curl -k  -u virt03:virt03 -T file4  sftp://192.168.56.110/home/virt03/ Syntax :  curl -k  -u username:password -T filename sftp://IP_Addreess OR Hostname:/path/to/upload  FTP curl -k  -u virt03:virt03 -T f
Read more

How to find outgoing IP in Linux ?

By -
Here is a small snippet to find outgoing IP of your Linux box. 1. To find the outgoing internal IP only         # ip route get 8.8.8.8 | head -1 | gawk '{ print $7 }' 2. To find the outgoing internal IP along with interface.   # ip route get 8.8.8.8 | head -1 | gawk '{ print $5,$7 }' 3. In-case if your system is connected to Internet, to find the outgoing external IP   # curl ifconfig.me Note:   In case if your system having public IP assigned then there is no difference between outgoing internal IP and external IP (both are same).
Read more