Revolutionary knowledge-based programming language.
Computation-powered interactive documents.
Semantic framework for real-world data.
Central infrastructure for Wolfram's cloud products & services.
Software engine implementing the Wolfram Language.
Instant deployment across cloud, desktop, mobile, and more.
Technology-enabling science of the computational universe.
Knowledge-based, broadly deployed natural language.
Curated computable knowledge powering Wolfram|Alpha.
gives the first ei for which crit[ei] is True, or Missing["NotFound"] if none is found.
gives default if there is no ei such that crit[ei] is True.
represents an operator form of SelectFirst that can be applied to an expression.
Select the first element that is even:
Use a pure function to test elements:
Give the default x when no even numbers are found:
SelectFirst operates on values in an Association:
Select FirstCase FirstPosition First
Oops. An error occurred. Please try again later.If you continue to experience a problem or if you have any questions, please contact us.