What does Loadasync return?

Returns : A Promise with the updated zip object. The promise can fail if the loaded data is not valid zip data or if it uses unsupported features (multi volume, password protected, etc).

Table of Contents

What is context in DynamoDB?

The DynamoDBContext class is the entry point to the Amazon DynamoDB database. It provides a connection to DynamoDB and enables you to access your data in various tables, perform various CRUD operations, and run queries.

What is the use of JSZip?

An instance of JSZip represents a set of files. You can add them, remove them, modify them. You can also import an existing zip file or generate one.

How do I use JSZip in react?

jszip

const zip = require(‘jszip’)(); let files = event.target.files; for (let file = 0; file < event.target.files.length; file++) { // Zip file with the file name.
zip.file(files[file].name, files[file]); }
zip.generateAsync({type: “blob”}).then(content => { saveAs(content, “example.zip”); }); }

What is secondary index in DynamoDB?

A secondary index is a data structure that contains a subset of attributes from a table, along with an alternate key to support Query operations. You can retrieve data from the index using a Query , in much the same way as you use Query with a table.

How do I zip a file with JSZip?

var zip = new JSZip(); // Add a text file with the contents “Hello World\n” zip. file(“Hello. txt”, “Hello World\n”); // Add a another text file with the contents “Goodbye, cruel world\n” zip. file(“Goodbye.

How do I compress a video in react?

The main steps to perform the compression and upload is as follows:

Asynchronously select a video and save its variables to a database.
Add the reference to a local queue in react native for synchronous processing.
Compress if required and upload the result to firebase storage.

What are the two types of index supported in DynamoDB?

Amazon DynamoDB supports two types of secondary indexes:

Global secondary index—An index with a partition key and a sort key that can be different from those on the base table.
Local secondary index—An index that has the same partition key as the base table, but a different sort key.

What is GSI and LSI in DynamoDB?

AWS DynamoDB supports two types of indexes: Global Secondary Index (GSI) and Local Secondary Index (LSI). Global secondary index is an index that have a partition key and an optional sort key that are different from base table’s primary key.

How do I compress an image in react?

We can resize, compress and convert the images based on our requirements. To compress your images follow these three simple steps: Install the package using npm/yarn. Add the particular code block to your project.

How do you use react-native video processing?

Go to node_modules/react-native-video-processing/ios/GPUImage/framework and drag GPUImage. xcodeproj to your project’s root directory in Xcode….

Add GPUImage. frameworkiOS to Embedded Binaries .
Navigate to your project’s bridging header file
Clean and run your project.

How do I open a jZip file?

zip files are supported.

On your Android device, open Files by Google .
On the bottom, tap Browse .
Navigate to the folder that contains a . zip file you want to unzip.
Select the . zip file.
A pop up appears showing the content of that file.
Tap Extract.
You’re shown a preview of the extracted files.
Tap Done.

What is the difference between query and Scan?

While Scan is “scanning” through the whole table looking for elements matching criteria, Query is performing a direct lookup to a selected partition based on primary or secondary partition/hash key.

Is DynamoDB an acid?

DynamoDB is designed to provide ACID transactions together with scalability. Terry defines scalability as the combination of 1) unbounded growth, and 2) predictable performance [1].

What does asynchronously load an asset mean?

Asynchronously loads an asset stored at path in a Resources folder. Returns a ResourceRequest, from which the asset can be retrieved once the loading operation is completed. Only objects of type T will be returned. The path is relative to any Resources folder inside the Assets folder of your project, extensions must be omitted.

What is the use of asynchronously loaded resources?

What is a yield?

The term yield may refer to slightly different aspects of a return for variable types of investments. For example, a yield on bonds, such as the coupon yield is the annual interest paid on the principal amount of the bond.

How to calculate yield on stocks?

Yield is calculated as: For example, the gains and return on stock investments can come in two forms. First, it can be in terms of price rise, where an investor purchases a stock at $100 per share and after a year they sell it for $120. Second, the stock may pay a dividend, say of $2 per share, during the year.