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 …
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In-depth guides, insights, and best practices for modern software engineering
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 Remove all Vowels from a String in Java
The challenge
Remove all vowels from the string.
Vowels:
a e i o u
A E I O U
The solution in Java code
Option 1:
public class VowelRemoval {
public …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 {
// …Understanding For Loops in Golang
In Golang a for loop is a way to loop through an iterable.
The most basic For Loop
i := 0
for i <= 3 {
i = i + 1
}
A classic For Loop
for i := 7; …[Solved] go mod init: modules disabled by GO111MODULE=off
You’ve probably just tried to initialise a new Go module, and received the following error:
go mod init: modules disabled by GO111MODULE=off; …
How to UpperCase the start of each Word in a String in Golang
The challenge
The task is to take a string of lower-cased words and convert the sentence to upper-case the first letter/character of each word …
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