Go Tutorial (Golang) - Looping Constructs in Golang | Golang For Loop

In this video we will see the Looping Constructs in Golang. Golang For Loop.
Welcome to this course on Go Programming Language Tutorial. Go is an open source programming language which was originally developed by Google. In this Go Tutorial we will Learn Go from the Basics with Code Examples. Go is a statically-typed language. Go has a syntax similar to C. Go has built-in concurrency.

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Go Tutorial (Golang) - Looping Constructs in Golang | Golang For Loop

Ida Nader

1599099600

How to Use If-Else Statements and Loops in R – Dataquest

When we’re programming in R (or any other language, for that matter), we often want to control when and how particular parts of our code are executed. We can do that using control structures like if-else statements, for loops, and while loops.

Control structures are blocks of code that determine how other sections of code are executed based on specified parameters. You can think of these as a bit like the instructions a parent might give a child before leaving the house:

“If I’m not home by 8pm, make yourself dinner.”

Control structures set a condition and tell R what to do when that condition is met or not met. And unlike some kids, R will always do what we tell it to! You can learn more about control structures in the R documentation if you would like.

In this tutorial, we assume you’re familiar with basic data structures, and arithmetic operations in R.

Not quite there yet? Check out our Introductory R Programming course that’s part of our Data Analyst in R path. It’s free to start learning, there are no prerequisites, and there’s nothing to install — you can start learning in your browser right now.

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(This tutorial is based on our intermediate R programming course, so check that out as well! It’s interactive and will allow you to write and run code right in your browser.)

Comparison Operators in R

In order to use control structures, we need to create statements that will turn out to be either TRUE or FALSE. In the kids example above, the statement “It’s 8pm. Are my parents home yet?” yields TRUE (“Yes”) or FALSE (“No”). In R, the most fundamental way to evaluate something as TRUE or FALSE is through comparison operators.

Below are six essential comparison operators for working with control structures in R:

== means equality. The statement x == a framed as a question means “Does the value of x equal the value of a?”
!= means “not equal”. The statement x == b means “Does the value of x not equal the value of b?”
< means “less than”. The statement x < c means “Is the value of x less than the value of c?”
<= means “less than or equal”. The statement x <= d means “Is the value of x less or equal to the value of d?”
> means “greater than”. The statement x > e means “Is the value of x greater than the value of e?”
>= means “greater than or equal”. The statement x >= f means “Is the value of xgreater than or equal to the value of f?”

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Fannie Zemlak

1599854400

What's new in the go 1.15

Go announced Go 1.15 version on 11 Aug 2020. Highlighted updates and features include Substantial improvements to the Go linker, Improved allocation for small objects at high core counts, X.509 CommonName deprecation, GOPROXY supports skipping proxies that return errors, New embedded tzdata package, Several Core Library improvements and more.

As Go promise for maintaining backward compatibility. After upgrading to the latest Go 1.15 version, almost all existing Golang applications or programs continue to compile and run as older Golang version.

#go #golang #go 1.15 #go features #go improvement #go package #go new features

张小龙

1596440100

Anatomy of Conditional Statements and Loops in Go

Go provides if/else and switch conditional statements for code execution based on certain conditions. To execute some code over and over again, we have the for loop.

The `if/else` conditional statement

Go provides if, if-else, if-else if-else variants of if/else statement we are familiar with. It is used to check a condition, and execute some code when the condition is true or false.

The if condition

Simple use of if condition is demonstrated below. Unlike most of the programming languages, Go does not allow to wrap the condition inside parenthesis ().

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张小龙

1597910176