Golang : Smarter Error Handling with strings.Contains()
In this tutorial, we will learn some simple trick with strings.Contain() function on capturing the error message and handling it according to the error message.
Most of the Go source code will typically use these lines of codes to handle error.
For example :
if err != nil {
panic(err)
}
or
if err!= nil {
fmt.Println(err.Error())
os.Exit(1)
}
Let's see how error can be handled in a smarter way. This block of code will first evaluates the error string and then do the necessary action.
if !strings.Contains(err.Error(), "timed out") {
fmt.Printf("resulting error not a timeout: %s", err)
}
or
if strings.Contains(err.Error(), "overflow") {
// DO SOMETHING TO RECOVER THE OVERFLOW
}
Hope you will find this short Golang tutorial useful
By Adam Ng
IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.
Advertisement
Tutorials
+13.3k Golang : Convert date format and separator yyyy-mm-dd to dd-mm-yyyy
+3.1k Linux/MacOSX : Search and delete files by extension
+4k Unix/Linux/MacOSx : Get local IP address
+3.5k JavaScript/JQuery : Redirect page examples
+4.6k Golang : Find the longest line of text example
+9.6k Golang : Get month name from date example
+25k Golang : Detect (OS) Operating System
+8.6k Golang : How to determine a prime number?
+11.5k Golang : Tutorial on loading GOB and PEM files
+6.8k Golang : automatically figure out array length(size) with three dots