What are some examples of CircleCI parameters?

Can you give me some examples of how to use parameters in CircleCI?

Sure! In CircleCI, parameters allow you to customize your jobs and workflows. For example, you can define a parameter in your config.yml like this:

version: 2.1
parameters:
  my_parameter:
    type: string
    default: "default_value"
jobs:
  my_job:
    docker:
      - image: circleci/python:3.8
    steps:
      - run: echo "Parameter value is: << parameters.my_parameter >>"

How do I pass a parameter when triggering a workflow?

You can pass parameters when triggering a workflow using the CircleCI API or the CircleCI UI. For example, using the API, you can include the parameter in your request like this:

curl -X POST https://circleci.com/api/v2/project/:project_slug/pipeline \
-H "Circle-Token: YOUR_TOKEN" \
-d '{"parameters": {"my_parameter": "new_value"}}'

Can I use parameters in conditional steps?

Yes, you can use parameters in conditional steps. For instance, you can conditionally run a step based on the parameter value like this:

steps:
  - run:
      name: Run only if parameter is true
      command: echo "This runs if my_parameter is 'true'"
      when:
        condition:
          equal: ["<< parameters.my_parameter >>", "true"]