YAML::PP::Schema::Failsafe - YAML 1.2 Failsafe Schema
my $yp = YAML::PP->new( schema => ['Failsafe'] );
With this schema, everything will be treated as a string. There are no booleans, integers, floats or undefined values.
Here you can see all Schemas and examples implemented by YAML::PP: https://perlpunk.github.io/YAML-PP-p5/schemas.html
Official Schema: https://yaml.org/spec/1.2/spec.html#id2802346
Called by YAML::PP::Schema