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Questions - sample

How Delphi Sydney 10.4 connect to a third-party build-in bluetooth printer with JAR SDK

My project: My task is it to built an Android/IOS Application that can connect with Bluetooth Printer and print receipt. My JAR file: I had download it from the manufacturer website with the filename ...
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Chee Haw Kerk

java

android

delphi

jar

sample

Votes: 0

Answers: 0

Python pandas sample without mixing index

I want to apply the sample function from Pandas independently for each value of the index for a data frame. This can be done with a for loop like this: import pandas df = pandas.DataFrame({'something...
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user171780

python

pandas

sample

Votes: 0

Answers: 1

Latest Answer

Use df.groupby(level=0).sample(frac=1, replace=True).
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timgeb

How do I fix the AWS Wild Rydes sample error: InvalidParameterException: "username should be an email"

Following the AWS WildRydes sample to Build a Serverless Web Application, after setting up the Cognito User Pool any attempt to register a user on the sample website generates the error: InvalidParam...
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Peter

amazon-web-services

amazon-cognito

sample

Votes: 0

Answers: 2

Latest Answer

It seems obvious that Cognito is attempting to validate the username passed and finding that it is not a valid email address, despite me supplying a valid email. Cognito is unlikely to be buggy, so I...
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Peter

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