guard

Từ điển Máy Tính - Foldoc Dictionary

guard

(programming)   1. In functional programming, a Boolean expression attached to a function definition specifying when (for what arguments) that definition is appropriate.

2. In (parallel) logic programming, a Boolean expression which is used to select a clause from several alternative matching clauses.

See Guarded Horn Clauses.

3. In parallel languages, a Boolean expression which specifies when an message may be sent or received.

Last updated: 1995-05-09

• Từ đồng nghĩa / Synonyms:
  guard duty, sentry duty, sentry go, precaution, safeguard, safety, safety device, defend, hold, ward