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Everything about Safe navigation operator

Boolean operator

In object-oriented programming, the safe navigation operator is a binary operator that returns null if its first argument is null; otherwise it performs a dereferencing operation as specified by the second argument. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Safe navigation operatorA 5-minute orientation
  2. Skim a recent paper: Safe Multi-Agent Reinforcement Learning for Behavior-Based Cooperative NavigationInfluential work since 2022
  3. Pick up a classic book: Laws, etcThe most-reprinted book on the subject
  4. Read the landmark paper: Operational Handbook for Safe Navigation in the Arctic OceanCited 0 times
  5. Go sideways: Ternary conditional operatorA closely related topic
  6. Go sideways: Elvis operatorA closely related topic

📖 Definitions

Noun A binary operator that returns its second argument, unless the first argument is null, in which case it returns null; used to simplify code that would otherwise need multiple explicit checks for nullity.

🗂️ The subject at a glance

  1. Examples

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics