How to Reverse Sort Integers in Go
The challenge
The two oldest ages function/method needs to be completed. It should take an array of numbers as its argument and return the two highest …
Read Article →Go
129 articles about go development, tools, and best practices
How to Reimplement the Unix Uniq Command in Golang
The challenge
Implement a function which behaves like the uniq command in UNIX.
It takes as input a sequence and returns a sequence in which all …
Read Article →How to check if a string is empty in Go
If you need to check if a string is empty in Go, then there are two possible ways to immediately verify this:
Option 1 – Compare the length:
if len(s) …How to read a file line by line in Go
If you need to read a file line by line in Go, then you can use the bufio package as follows:
package main
import (
"bufio" …Floating-point Approximation in Golang
The challenge
Consider the function
f: x -> sqrt(1 + x) - 1 at x = 1e-15.
We get: f(x) = 4.44089209850062616e-16
This function involves the …
Read Article →All the Ways to Divide an Array in Two in Golang
The challenge
Write a function partlist that gives all the ways to divide an array of at least two elements into two non-empty parts.
- Each two non …
How to check if a file exists in Go
If you need to check if a file exists using Go, then you can use one of the following methods, depending on the version of Go you may be using.
If you …
Read Article →How to convert a string value to an int in Go
If you need to convert a string to an int in Go, then you should use the strconv.Atoi function:
package main
import (
"strconv" …How to convert an int value to string in Go
If you need to convert an int to a string in Go, then you should use the strconv.Itoa function:
package main
import (
"strconv" …How to Efficiently Concatenate Strings in Go
If you are using a version of Go >= 1.10, then you should be using the newer strings.Builder pattern as follows:
package main
import ( …How to check if a map contains a key in Go
If you have a map in Go and want to only perform an action if it contains a certain key, then you can do so easily:
if val, ok := …How to Loop Forever in Golang
If you need to loop forever, or infinitely, in your Go code, then you have 2 options:
Option 1:
for {
// your code here
}
Option 2:
for true {
// …