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Please don't trash YAML. If you stick to "the good parts", YAML is an almost perfect human/machine readable and editable text format.

For example, we store almost all our parameterized test cases in YAML because we can then use these files as inputs to test runners in JS, Python, Go, etc.

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To be fair, if you stick to the good parts, any language is good.

It's the good parts : bad parts proportion that tends to ruin things.

You still have to handle the bad parts if someone sends them to you...

Yeah, that's why that proportion is important. There are a lot of examples for that. XML, C++, PHP. The list goes ever on and on :-).

I didn't mean for that to be an interpretation of trashing YAML. The YAML format is more complex to parse and there are less parsers available. It is an easier to read format for sure but that comes at a cost. There are lots of good things about YAML.

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