FISH Rules and Usage

Information in this section covers the foundational aspects of the FISH language. The FISH Function Index in this section indexes the built-in FISH functions. The FISH functions available to query and manipulate PFC model components (e.g., balls, clumps, walls, contacts) are available in the “PFC Model Components” section. Functions for use with the general components of Itasca software are cataloged in the “FISH Summary section.”

For those who are ready to delve into FISH and its potential, a review of the following topics is a good starting point.

• Lines
• Data Types
  • Strings
  • Pointers
  • Vectors
  • Arrays
  • Matrices
  • Tensors
  • Maps
  • Structures
• Reserved Names for Functions and Variables
• Scope of Variables
• Functions: Structure, Evaluation, and Calling Scheme
• Arithmetic: Expressions and Type Conversions
• Redefining FISH Functions
• Execution of FISH Functions
• Inline FISH or FISH Fragments
• FISH Error Handling
• FISH Callback Events
• FISH Debugging