If you get the following message, then there’s a very easy fix:npm ERR! could not determine executable to run The solution – using npm The… Read More »[Solved] npm ERR! could not determine executable to run
If you get the following error and need a solution, then look no further! Option 1 – With npm First, remove the node-sass dependency from… Read More »[Solved] npm ERR! path node_modules/node-sass
You can install lodash through yarn as follows: Step 1 – Install Lodash to get the Library Step 2 – Get the Typescript info
If you need to SHA256 a String in Go, then you can use the crypto/sha256 package. SHA256 a String in Go The output will look… Read More »How to SHA256 a String in Golang
Go ships with an encoding/base64 package that allows for encode and decoding of Base64 strings. Import the base64 package and then start using it! Base64… Read More »How to Base64 Encode/Decode in Golang
Quick solution In short, you can just do this: Examples and an explanation In Java 8 and above, you just need to import the Base64… Read More »How to Base64 Encode a String in Java
If you have an aws_lambda_function block that needs to make use of environment variables, then you can simply do the following: The above example creates… Read More »How to add a Lambda Environment Variable in Terraform
The challenge You will be given an array of integers whose elements have both a negative and a positive value, except for one integer that… Read More »How to perform Array Element Parity in Golang
The challenge Given a string str, reverse it omitting all non-alphabetic characters. Examples: For str = “krishan”, the output should be “nahsirk”. For str = “ultr53o?n”, the output should… Read More »How to Reverse Letters in Kotlin
The challenge Get the ASCII value of a character. The solution in Kotlin Option 1: Option 2: Option 3: Test cases to validate our solution
You have 2 options: Option 1 – Recommended (Using npx) Option 2 – Older way (Using npm globally)
The challenge Take the following IPv4 address: 128.32.10.1 This address has 4 octets where each octet is a single byte (or 8 bits). 1st octet… Read More »How to Convert IPv4 to int32 in Javascript
The challenge Finish the solution so that it takes an input n (integer) and returns a string that is the decimal representation of the number grouped by… Read More »How to Solve the Grouped by Commas Challenge in Javascript
You have 3 options here: Option 1: use tee with sed Option 2: use > with sed Option 3: use sed with -i option
If you have a BigNumber when using web3, then you can convert this to a regular Javascript Number using the ethers library as follows: Ethers… Read More »How to Convert BigNumber to Int/Number in Ethers/Web3
The challenge Write a function that when given a number >= 0, returns an Array of ascending length subarrays. Note: the subarrays should be filled with 1s… Read More »How to Create a Pyramid Array in Javascript
The challenge Your job is to create a calculator which evaluates expressions in Reverse Polish notation. For example expression 5 1 2 + 4 * + 3… Read More »How to Create a Reverse Polish Notation Calculator in Javascript
If you need to declare a global variable in React, then you can do the following: Create a file called config.js Then import the config… Read More »How to declare a global variable in React?
The challenge An Arithmetic Progression is defined as one in which there is a constant difference between the consecutive terms of a given series of… Read More »How to Find the Missing Term in an Arithmetic Progression in Javascript
The challenge The main idea is to count all the occurring characters in a string. If you have a string like aba, then the result should… Read More »How to Count Characters in a Javascript String
Use the following code block to get started: Then in your HTML code, add it like this:
If you would like to disable the text selection highlighting that is enabled by default on all browsers, then you can do this: If you… Read More »How to disable text selection highlighting in CSS
The challenge You will have a list of rationals in the form: where all numbers are positive integers. You have to produce their sum N /… Read More »Irreducible Sum of Rationals in Golang
In your source account create a customer-managed policy: In your destination bucket, update the bucket policy: Testing the S3 copy between accounts:
If you need to recursively find all symbolic links in a directory tree on a Mac, then you have a couple of options. You could… Read More »How to find all symlinks in a directory tree on Mac