Questions tagged [lambda]

Remember to avoid using this for the AWS service (refer to [aws-lambda] for any related inquiries!) Lambdas, also known as anonymous functions or closures, can be found in various programming languages such as Lisp, C#, C++, Lua, Python, Ruby, JavaScript, Java, Excel, and Google Sheets. They are often referred to as lambda expressions.

Converting C# to VB.Net: Understanding Selenium Wait Commands and Examples

I need help converting the code in the example text. Can you show me how to do it? wait.Until(e => e.FindElement(By.XPath("//a/h3"))); Original Source : Wait | Selenium Original Code : driver = new ChromeDriver(); driver.Url = "https://www.google.com/ ...

Filtering an array of objects based on another array of objects in Angular2 through the use of pipes

I'm having trouble understanding how to use the angular pipe to filter an array of objects based on another array of objects. Currently, I have a pipe that filters based on a single argument. I am working with two arrays, array1 and array2, both containin ...

Eliminate certain characters from the rows within a designated column

Starting out with a simple question. I've attempted to remove hyphens and the first two characters of the personal numbers in the personal number column. Despite my efforts, the hyphens remain in my dataset and I encounter an error when trying to repl ...

Python - when there is a lengthy loop running, how can a thread be used to periodically perform an action within the same scope?

Imagine a scenario where I am running a loop that involves reading a lengthy file. How can I ensure that at regular intervals, let's say every x milliseconds, a specific "some code" is executed? while inFile.readable(): line = inFile.readline() p ...

LambdaFunctionAssociationError: The size of the function code exceeds the maximum allowed limit

Encountering an error while trying to add a Lambda function association to a CloudFront distribution com.amazonaws.services.cloudfront.model.InvalidLambdaFunctionAssociationException: The function code size exceeds the maximum allowed size for functions ...

Guide to eliminating any negative numbers from a list using Python's lambda functions

After successfully implementing a lambda function to sort a list, I am now looking to remove all the negative objects from the list using lambda functions. dto_list.sort(key=lambda x: x.count, reverse=True) Is there anyone who knows how to write the lamb ...

Should Node.js utilize a framework?

I am embarking on the journey of creating the server component for a client app. My tools of choice are nodejs and a nosql db, with the requirement that it should be deployable on AWS Lambda. As I venture into this new territory, I kindly ask for assista ...

Unable to use csv-parse library on AWS Lambda function running Node.js 12

Currently, I am working on a project that involves using csv-parse on AWS Lambda with a runtime of Node 12.x. I have installed the necessary modules using npm 6.14.10 (node v12.20.1). { "name": "data_analysis_node", "version&q ...

Sequelize makes it easy to input records into various tables simultaneously

Embarking on my first experience with Sequelize and MySQL, I am seeking guidance on inserting data into two tables with a foreign key relationship. Let's delve into the structure of the entities - bookingDescription and bookingSummary. //bookingSummary mo ...

[AWS Lambda SDK] - Executing Lambda Function - Processing Payload Response as Unit8Array - Conversion to String

Currently, I am utilizing the npm package @aws-sdk/client-lambda to invoke Lambdas. In my setup, I have two Lambdas - Lambda A and Lambda B, with Lambda A responsible for invoking Lambda B. The invocation of Lambda B from Lambda A is done through the foll ...

Difficulties Encountered when Converting HTML to PDF with Puppeteer on AWS Lambda

HTML TO PDF Struggling with the conversion of HTML to PDF using Puppeteer in a Node.js 16 AWS Lambda environment is proving to be quite challenging. Puppeteer's performance seems to vary when deployed on AWS Lambda or serverless setups, despite work ...

What is the best way to utilize lambda functions to remove a column from a pandas dataframe?

After researching on the internet, I came across this code for data manipulation: train_df = train_df.drop(['Ticket', 'Cabin'], axis=1) test_df = test_df.drop(['Ticket', 'Cabin'], axis=1) However, I wanted to simpl ...

How can the request object be obtained in a Node.js lambda function using Serverless Websockets?

Connecting my client application to the Websocket server using the URL: wss://xxxxxxx/xxxxx/xxxx?value=abcd The WebSocket server I'm working on needs to retrieve the value "abcd" that is passed by the client in the request URL. However, all I can find in ...

Using Python's lambda function to extract data from DynamoDB's JSON structure

I'm looking for a Python Lambda function that can handle DynamoDB streams and convert the JSON data from DynamoDB format to standard JSON. PHP and nodejs have Marshaler options for this task, but I'm interested in finding similar or alternative solutions ...

Deliver a personalized error notification using serverless-http (express) framework

I am trying to send a custom error message in JSON format from my express app, which is served in a lambda function using serverless-http To achieve this, it seems I need to utilize LAMBDA_PROXY APIG integration to enable sending custom error messages dir ...

When attempting to establish a connection with MongoClient, the function fails gracefully without generating an error

try { if (!conn) { console.log("Attempting to Connect to Atlas"); conn = await MongoClient.connect(process.env.MONGO_URL, { useNewUrlParser: true, useUnifiedTopology: true, }); console.log("Success ...

Leverage the power of the OR operator in a Lambda function for Python web scraping

Referencing the example provided in this link - How to extract html links with a matching word from a website using python I developed a web scraping script to search for specific keywords in both recent and cached versions of a local newspaper. from bs4 ...

Converting ExpressJS Function for Multipart Uploading to AWS Lambda

Looking for advice on converting this Express.js function to AWS Lambda for Node.js 18. const upload = multer() // Write received chunk to S3 bucket app.post('/upload', upload.single("file"), (req, res) => { const { index, fileName } = req. ...

Is there a more efficient method in Python to store current variables in a lambda function without altering the existing ones?

This example perfectly illustrates the issue: ans = [] for x in range(1, 10): ans.append(lambda: x) # ----------------------- # let's see what happened: ans[0]() # outputs 9 instead of 1 How can we ensure that x is captured right away in the function, ...

Guidelines for managing UnprocessedItems with the AWS JavaScript SDK for dynamoDB

Currently, I'm facing an issue while attempting to utilize an AWS Lambda function for handling events from SendGrid. The event is expected to be in the form of an array containing a variable number of JSON objects, each representing a specific event. ...

Navigating through the properties of an IWebElement object

In my current project, I am using C# and Selenium with the page object model approach to automate testing on a website. I have implemented a page object that includes a list of IWebElement properties representing various buttons and links on the website t ...

Exploring a table in AWS DynamoDB

Using DynamoDB for a new project is proving to be quite confusing. I've set up a table with a hash key named ID, which I'm making unique by setting it as a timestamp. When inserting data using Lambda, here's how it looks: var tableName = ...

"Creating a lambda function with multiple conditional statements for data manipulation in a Pand

I have a basic dataset containing revenue and cost values. In my particular case, the cost figures can sometimes be negative. My goal is to calculate the ratio of revenue to cost using the following formula: if ((x['cost'] < 0) & (x[&apo ...

JavaScript has encountered an Uncaught TypeError due to an illegal invocation

I am currently developing a lambda function that calls another function with specific parameters. While this code runs without issues in Firefox, it encounters an error in Chrome, displaying a strange message in the inspector: Uncaught TypeError: Illegal ...

A simple lambda expression shortcut technique for sorting elements in Python

I have a functional code snippet but it's quite messy: a = 0 for k in keys: a = a + 1 if a == 1: k1 = k if a == 2: k2 = k if a == 3: k3 = k ...

Sending an mp3 file as a HTTP response within a lambda function

I have a lambda function in Python 3.6 on AWS, triggered by API Gateway, that merges multiple mp3 files using ffmpeg. My goal is to return the final mp3 file as the response from the lambda function. Here is how I create the combined mp3 file: p = subproc ...

I am having trouble accessing the existing fields within a JSON object as I keep receiving an "undefined

Within my AWS Lambda function, I am retrieving an unparsed JSON object which I then parse to access its values. if(data.Payload){ var parsedData = JSON.parse(data.Payload) console.log("PAYLOAD --> " + parsedData); ...