tests/results/four-lectures_structure.json

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      "title": "ML at a Glance",
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          "title": "An ML session",
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          "title": "Recursive Functions",
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          "title": "Raising Exceptions",
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          "title": "Signatures",
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        {
          "title": "Coercive Signature Matching",
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        {
          "title": "Functor Declaration",
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        {
          "title": "Functor Application",
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        {
          "title": "Summary",
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      "node_id": "0001"
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    {
      "title": "Programming with ML Modules",
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          "title": "Introduction",
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          "title": "Structures",
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          "title": "Functors",
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        {
          "title": "Substructures",
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          "title": "Sharing",
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        {
          "title": "Building the System",
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        {
          "title": "Separate Compilation",
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        {
          "title": "Good Style",
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        {
          "title": "Bad Style",
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      "node_id": "0012"
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    {
      "title": "The Static Semantics of Modules",
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          "title": "Elaboration",
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        {
          "title": "Names",
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        {
          "title": "Decorating Structures",
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        {
          "title": "Decorating Signatures",
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        {
          "title": "Signature Instantiation",
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        {
          "title": "Signature Matching",
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          "node_id": "0029"
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        {
          "title": "Signature Constraints",
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        {
          "title": "Decorating Functors",
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          "node_id": "0031"
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        {
          "title": "External Sharing",
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        {
          "title": "Functors with Arguments",
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          "node_id": "0033"
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        {
          "title": "Sharing Between Argument and Result",
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          "node_id": "0034"
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        {
          "title": "Explicit Result Signatures",
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          "node_id": "0035"
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      "node_id": "0023"
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      "title": "Implementing an Interpreter in ML",
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          "title": "Version 1: The Bare Typechecker",
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          "title": "Version 2: Adding Lists and Polymorphism",
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        {
          "title": "Version 3: A Different Implementation of Types",
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        {
          "title": "Version 4: Introducing Variables and Let",
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          "node_id": "0040"
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        {
          "title": "Acknowledgement",
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      "node_id": "0036"
    },
    {
      "title": "Appendix A: The Bare Interpreter",
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          "title": "Syntax",
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          "end_index": 44,
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        {
          "title": "Parsing",
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          "end_index": 45,
          "node_id": "0044"
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        {
          "title": "Environments",
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          "end_index": 45,
          "node_id": "0045"
        },
        {
          "title": "Evaluation",
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          "title": "Type Checking",
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        },
        {
          "title": "The Interpreter",
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        {
          "title": "The Evaluator",
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          "node_id": "0049"
        },
        {
          "title": "The Typechecker",
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          "node_id": "0050"
        },
        {
          "title": "The Basics",
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        }
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      "node_id": "0042"
    },
    {
      "title": "Appendix B: Files",
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      "end_index": 53,
      "node_id": "0052"
    }
  ]
}