How to Work with Standard Input and Output in Deno

I recently posted a introduction to Deno where I walk through how to get Deno installed and the features I think make it an exciting project. The next step for me was to start building something with Deno.

The first project I took a look at was a node script I used to generate new blog posts in Gridsome. Before I tackle the entire script I want to use this tutorial to discuss how you can work with standard input and output in Deno.

Standard Input & Standard Output

Before you write any code I think it is important for you to understand what standard in and standard out are. Standard output, sometimes abbreviated stdout, refers to the standardized stream to which a program writes its output data. Standard input, sometimes abbreviated stdin is a stream from which a program reads its input data. Without getting into low level abstractions this is way to read and write data.

Deno stdin & stdout

Now that you have an understanding of what standard in & out are let’s talk about them in the context of Deno. If you want to get a handle for [stdin](https://doc.deno.land/https/github.com/denoland/deno/releases/latest/download/lib.deno.d.ts#Deno.stdin) or [stdout](https://doc.deno.land/https/github.com/denoland/deno/releases/latest/download/lib.deno.d.ts#Deno.stdout) you can use the properties from the Deno Runtime API:

Deno.stdin;
Deno.stdout;

If you take a look at the source for Deno you will see the following:

/** A handle for `stdin`. */
export const stdin: Reader & ReaderSync & Closer & { rid: number };
/** A handle for `stdout`. */
export const stdout: Writer & WriterSync & Closer & { rid: number };

If you’re new to TypeScript that probably looks a little confusing but don’t let it scare you. Deno is declaring a variable called stdin that is a type that combines Reader, ReaderSync and Closer and an object with a property called rid. In TypeScript these are called Intersection Types and they are pretty darn cool once you start using them.

#deno #node #javascript #typescript #web-development

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How to Work with Standard Input and Output in Deno

How to Work with Standard Input and Output in Deno

I recently posted a introduction to Deno where I walk through how to get Deno installed and the features I think make it an exciting project. The next step for me was to start building something with Deno.

The first project I took a look at was a node script I used to generate new blog posts in Gridsome. Before I tackle the entire script I want to use this tutorial to discuss how you can work with standard input and output in Deno.

Standard Input & Standard Output

Before you write any code I think it is important for you to understand what standard in and standard out are. Standard output, sometimes abbreviated stdout, refers to the standardized stream to which a program writes its output data. Standard input, sometimes abbreviated stdin is a stream from which a program reads its input data. Without getting into low level abstractions this is way to read and write data.

Deno stdin & stdout

Now that you have an understanding of what standard in & out are let’s talk about them in the context of Deno. If you want to get a handle for [stdin](https://doc.deno.land/https/github.com/denoland/deno/releases/latest/download/lib.deno.d.ts#Deno.stdin) or [stdout](https://doc.deno.land/https/github.com/denoland/deno/releases/latest/download/lib.deno.d.ts#Deno.stdout) you can use the properties from the Deno Runtime API:

Deno.stdin;
Deno.stdout;

If you take a look at the source for Deno you will see the following:

/** A handle for `stdin`. */
export const stdin: Reader & ReaderSync & Closer & { rid: number };
/** A handle for `stdout`. */
export const stdout: Writer & WriterSync & Closer & { rid: number };

If you’re new to TypeScript that probably looks a little confusing but don’t let it scare you. Deno is declaring a variable called stdin that is a type that combines Reader, ReaderSync and Closer and an object with a property called rid. In TypeScript these are called Intersection Types and they are pretty darn cool once you start using them.

#deno #node #javascript #typescript #web-development

Layne  Fadel

Layne Fadel

1620663600

Learn how file input and output works in C

If you want to learn input and output in C, start by looking at the stdio.h include file. As you might guess from the name, that file defines all the standard (“std”) input and output (“io”) functions.

The first stdio.h function that most people learn is the printf function to print formatted output. Or the puts function to print a simple string. Those are great functions to print information to the user, but if you want to do more than that, you’ll need to explore other functions.

You can learn about some of these functions and methods by writing a replica of a common Linux command. The cp command will copy one file to another. If you look at the cp man page, you’ll see that cp supports a broad set of command-line parameters and options. But in the simplest case, cp supports copying one file to another:

cp infile outfile

You can write your own version of this cp command in C by using only a few basic functions to read and write files.

#c #input #output

Clara  Gutmann

Clara Gutmann

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Angular Input Output: Angular 9 @Input and @Output

Angular Framework is built upon small components so passing the data from Parent component to child component is a little bit tricky, In that scenario, @Input and @Output Decorator comes in handy.  You can define the properties for components you create, and make them available in your whole application.

Angular components have a better way of notifying parent components that something has changed via events. Inputs specify which properties you can set on a component from a parent, whereas “Outputs” identifies the events a component can fire to send information up the hierarchy to its parent from its child component.

#angular #angular cli #inputs #outputs

Alice Cook

Alice Cook

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Fix: G Suite not Working | G Suite Email not Working | Google Business

G Suite is one of the Google products, developed form of Google Apps. It is a single platform to hold cloud computing, collaboration tools, productivity, software, and products. While using it, many a time, it’s not working, and users have a question– How to fix G Suite not working on iPhone? It can be resolved easily by restarting the device, and if unable to do so, you can reach our specialists whenever you want.
For more details: https://contactforhelp.com/blog/how-to-fix-the-g-suite-email-not-working-issue/

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Xfinity Stream Not Working?

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#my internet is not working comcast #comcast tv remote not working #my xfinity internet is not working #xfinity stream not working #xfinity wifi hotspot not working