Tutorial

Writing HGraph code can be different to standard procedural coding. This tutorial attempts to help guide the user through the basics of writing graph code. This tutorial assume you have installed HGraph, if you need to do this refer to Getting Started.

• Basic Programming Structure
  • evaluate_graph
  • graph
  • Aside
• Unit Testing - Basics
  • The eval_node Function
  • The debug_print Function
  • breakpoint_
• The Compute Node
  • Node Instance
  • Timing
  • valid
  • active
  • Aside
• Injectables
  • State
  • Scheduling
  • Logging
  • Access the Output
  • Engine Time
  • The Engine API
• Typing
  • TimeSeriesValue (TS)
  • Casting
  • CompoundScalar
  • TimeSeriesBundle (TSB)
    • Exercise
  • TimeSeriesList (TSL)
  • TimeSeriesSet (TSS)
  • TimeSeriesDict (TSD)
• Generics
  • SCALAR
    • Exercise
  • TIME_SERIES_TYPE
    • Exercise
  • Resolvers
  • Requires
• Operators
• Graph
  • Basic example
  • Composition
  • Polymorphism
  • Higher Order Functions
• Common Pitfalls
  • The infinite loop
    • Symptom
    • Likely Cause
    • How to validate
    • Corrective Actions