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Lambdas

Sumit Rawal answered on January 21, 2021 Popularity 10/10 Helpfulness 2/10

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  • Lambdas

    1

    We have to specify function names while creating them. However, there is a special class of functions for which we do not need to specify function names.

    Definition

    A lambda is an anonymous function that returns some form of data.

    Lambdas are defined using the lambda keyword. Since they return data, it is a good practice to assign them to a variable.

    Syntax#

    The following syntax is used for creating lambdas:

    svg viewer

    In the structure above, the parameters are optional.

    Let’s try creating a few simple lambdas.

    Below, we can find a lambda that triples the value of the parameter and returns this new value: 

    Popularity 10/10 Helpfulness 2/10 Language python
    Source: Grepper
    Tags: python
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    Contributed on May 16 2023
    Sumit Rawal
    0 Answers  Avg Quality 2/10

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    -2

    The evolution or timeline of Lambda looks something like this:

    On-Prem DataCenter –> IAAS –> PaaS –> containerization/Docker –> Serverless

    Lambda is a compute service where you can upload your code and create a Lambda function. AWS Lambda takes care of provisioning and managing the servers that you use to run the code. You do not have to worry about operating systems, patching, scaling etc.

    It is essentially described as an event-driven compute service where AWS Lambda runs your code in response to events. These events could be changes to the data in an Amazon S3 bucket or an Amazon Dynamo DB table.

    Lambda events can trigger other Lambda events or call other AWS services like SQS or SNS.

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    Contributed on May 18 2023
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