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I’m integrating AWS IoT Core with a Flutter app that already uses Amplify Auth (Cognito User Pool). To allow IoT connections, I added a Cognito Identity Pool section to my amplifyconfiguration.dart (staging environment): "CredentialsProvider": { "CognitoIdentity": { "Default": { "PoolId": "us-east-1:xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", "Region": "us-east-1" } } } In the app, I call: await Amplify.Auth.fetchAuthSession(forceRefresh: true); before connecting to IoT. However, it always throws this exception: AwsIotMqttException( Unable to fetch identityId from Cognito session: No identity pool registered for this account ) What I’ve Verified The same user’s ID token works perfectly from the AWS CLI: aws cognito-identity get-id \ --identity-pool-id us-east-1:xxxxxxx

I am trying to deploy a Next.js frontend from my Turborepo monorepo to Vercel. The deployment fails during the build step when it tries to run prisma generate. The error log clearly shows that the DATABASE_URL environment variable is missing, even though I have it defined in my local .env files and have also added the variable to my Vercel project settings. The Error Log from Vercel @repo/db:build: @repo/db:build: > @repo/db@ build /vercel/path0/packages/db @repo/db:build: > prisma generate && tsc @repo/db:build: @repo/db:db:generate: [[email protected]] injecting env (0) from .env.example -- tip: ⚙️ override existing env vars with { override: true } @repo/db:db:generate: Failed to load config file "/vercel/path0/packages/db" as a TypeScript/JavaScript module. Error: PrismaConfigEnvError: Missing required environment variable: DATABASE_URL @repo/db:db:generate:  ELIFECYCLE

Reposted from here as per the recommendations in the comments, please delete if necessary: R: Percent of time spent in a country I am working with the R programming language. I have this dataset: myt = structure(list(name = c("Alice", "Bob", "Bob", "Charlie", "Diana", "Diana", "Eve", "Eve", "Frank", "Frank", "Frank", "Grace", "Grace", "Henry", "Henry", "Henry"), country = c("USA", "Canada", "Mexico", "UK", "France", "Germany", "USA", "Canada", "Mexico", "USA", "UK", "France", "Germany", "USA", "Canada", "Mexico"), date_arrived = structure(c(1

Has anyone else experienced this issue and if so, what was your resolution? I have a project that was working prior to the switch from 9.0 to 10.0. The child controls no longer trigger the onclick event which is supposed to bubble up and get handled. When tested, the @onclick event isn't even fired. I'm guessing there is some item that was updated by MS before release but I'm very unsure where to look at this point. For now I'll have to move back to .net 9.0 which is kind of sad unless I can find a work around.

On Github there is a promising repository that hasn't been maintained for years. So there are pull requests from other users that have been ignored. I have forked the repo. Is there a way to get the unmerged PR commits into my forked repo without just copy-paste editing?

import Vector class Ball: radius: float color: str position: Vector.Vector velocity: Vector.Vector acceleration: Vector.Vector def __init__(self, radius, color,position, velocity, acceleration): self.radius = radius self.color = color self.position = position self.velocity = velocity self.acceleration = acceleration def update(): velocity = velocity.add(acceleration) position = position.add(velocity) The problem I'm having is that the acceleration in the update function is registering that acceleration is a state variable, and it is saying it is not defined

I am working with the R programming language. I have this dataset: myt = structure(list(name = c("Alice", "Bob", "Bob", "Charlie", "Diana", "Diana", "Eve", "Eve", "Frank", "Frank", "Frank", "Grace", "Grace", "Henry", "Henry", "Henry"), country = c("USA", "Canada", "Mexico", "UK", "France", "Germany", "USA", "Canada", "Mexico", "USA", "UK", "France", "Germany", "USA", "Canada", "Mexico"), date_arrived = structure(c(17897, 18414, 18536, 18779, 18231, 18475, 18597, 18687, 18048, 18322, 18567, 17897, 18762, 18383, 18489, 18597), class = "Date"), date_left = structure(c(18322, 18506, 18659, 18840, 18444, 18567, 18659, 2932896, 18231, 1

I need to compute the Hessian of a function involving cross products in Python. As an experiment, I consider the simple function def func(x): return np.sum(np.cross(x[0:3], x[3:6])) and compute the Hessian with x0 = np.array([1,2,3,4,5,6]) H = scipy.differentiate.hessian(func, x0) However, this fails with the error ValueError: incompatible dimensions for cross product (dimension must be 2 or 3) I'm guessing the problem lies with this line from the scipy.differentiate.hessian documentation: argument f must be vectorized to accept an array of shape (m, ...). The first axis represents the m inputs of f; the remaining axes indicated by ellipses are for evaluating the function at several abscissae in a single call. but I don't have the Python know-how to fix this. C

I am designing a DB where basically parent can't exist without two children. E.g: Entity set Marriage, CAN'T exist without entity set Man and entity set Woman, but neither Man or Woman need Marriage Entity set to exist. (Lets imagine only Man and Woman marriages so its less complex). Also, lets imagine Marriage can have many men or many women, but men and women can only have ONE marriage. I need help on the query, how do I enforce this? CREATE TABLE Marriage( marriageId INT ) CREATE TABLE Man( manId INT, marriageId INT, FOREIGN KEY (marriageId) REFERENCES Marriage(marriageId) ON DELETE SET NULL ) CREATE TABLE Woman( womanId INT, marriageId INT, FOREIGN KEY (marriageId) REFERENCES Marriage(marriageId) ON DELETE SET NULL ) This is basically what I have now. (other attributes don't matter right now). In summary my question is, how can I enforce the TOTAL participation in both ends from marriage?

I have a table of relationships between contracts with two variables: ID1 (refinanced contract) and ID2 (refinancing contract). I want to create a variable that groups all rows of N to M refinancings. For example, if we have: ID1 ID2 A Z A Y A X B Z B Y C W D W E V E U F T I want to create a variable such that: ID1 ID2 Group A Z 1 A Y 1 A X 1 B Z 1 B Y 1 C W 2 D W 2 E V 3 E U 3 F T 4 The logic is the following: All rows with the same ID1 should have the same value of Group. All rows with the same ID2 should have the same value of Group. The two above conditions have to be combined. In the example, since A->Z and also B->Z, then all rows with ID1 = A or ID1 = B should have