Export utility functions has_constant_lags and has_dependent_lags #317
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These utility functions allow users to easily check whether a DDEProblem contains constant delays, dependent delays, or both. They were previously internal functions but are useful for users to inspect their problems. The functions work with both DDEProblem objects and DDEIntegrator objects: - has_constant_lags(prob/integrator): returns true if problem has constant delays - has_dependent_lags(prob/integrator): returns true if problem has dependent delays This is a non-breaking change that adds helpful functionality for users working with delay differential equations. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
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Summary
This PR exports two useful utility functions that were previously internal:
has_constant_lags(prob/integrator): Returns true if the DDE problem contains constant delayshas_dependent_lags(prob/integrator): Returns true if the DDE problem contains dependent delaysMotivation
These functions are already well-documented and used internally throughout the codebase. Making them available to users allows them to easily inspect their DDEProblem objects to understand what types of delays they contain, which can be helpful for:
Implementation
The change is minimal - just adding the two function names to the export list in
src/DelayDiffEq.jl. The functions themselves are already defined insrc/utils.jlwith comprehensive docstrings.Testing
Both functions work correctly with DDEProblem objects:
has_constant_lagsreturnstruefor problems withconstant_lags,falseotherwisehas_dependent_lagsreturnstruefor problems withdependent_lags,falseotherwiseBreaking Changes
This is a non-breaking change that only adds new exports. No existing functionality is modified.
🤖 Generated with Claude Code