Notes on Go Language
Install go Lang on Ubuntu : https://github.com/golang/go/wiki/Ubuntu
If you’re using Ubuntu 16.04 LTS and are unable to install golang-1.10-go, then you can also use the longsleep/golang-backports PPA:
sudo add-apt-repository ppa:longsleep/golang-backports
sudo apt-get update
sudo apt-get install golang-go
root@BlockChainHLF:~/work/hlf/fabric-samples# go version
go version go1.10.1 linux/amd64
Defining time. Time in Go :
t := time.Now()
DateTime: &t,
Building first chain code
/work/hlf/fabric-samples/chaincode/chaincode_example02/go# go build
# github.com/hyperledger/fabric/vendor/github.com/miekg/pkcs11
../../../go/src/github.com/hyperledger/fabric/vendor/github.com/miekg/pkcs11/pkcs11.go:26:18: fatal error: ltdl.h: No such file or directory
compilation terminated.
To Solve this install :
[libltdl-dev – A system independent dlopen wrapper for GNU libtool]
/hlf/fabric-samples/chaincode/chaincode_example02/go# sudo apt install libltdl-dev
Reading package lists… Done
Building dependency tree
/work/hlf/fabric-samples/chaincode/chaincode_example02/go# go build
/work/hlf/fabric-samples/chaincode/chaincode_example02/go# ls -l
total 14840
-rw-r–r– 1 root root 5436 Apr 21 00:11 chaincode_example02.go
-rwxr-xr-x 1 root root 15184528 Apr 22 08:26 go
Create Struct from JSON
https://mholt.github.io/json-to-go/
Also refer more on Json
https://blog.golang.org/json-and-go
Regular Expression in go
Sumit Arora 
if you are using centos/rhel,
sudo yum install -y libtool-ltdl-devel
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