Challenge 2 / 2

What is the difference between the following two blocks of YAML?

Block A:

# config/packages/twig.yaml
twig:
    globals:
        answer_to_everything: 42

when@dev:
    twig:
        globals:
            answer_to_everything: 21

Block B:

# config/packages/twig.yaml
when@dev:
    twig:
        globals:
            answer_to_everything: 21

twig:
    globals:
        answer_to_everything: 42

In Block B), answer_to_everything will always be 42, because the last block (which applies to all environments) will override the value from the when@dev block.

In Block A), answer_to_everything will always be 42, because that value is set first (and so it can't be overridden after in when@dev)

Both are equivalent: answer_to_everything will be 42 in most environments, but 21 in the dev environment.

Rewatch the video