Take
Take is an operation that limits output to at most a specified number of leading elements or emitted values from a sequence or stream.
Spring in Action, Sixth Edition
take is a Project Reactor operator that limits the number of elements emitted by a publisher and then completes.
- How it is used
- Limits a Flux by item count or elapsed time, including periodic streams and reactive controller responses.
- How deep it goes
- Explains both overloads through tests and notes source-subscription cancellation for count-based take, without exploring implementation internals.
- Examples
- Tests national-park values and a five-item interval; limits a reactive taco endpoint to 12 objects.
- What you can do after
- Apply it via Project Reactor to cap emitted items or stop a Flux after a duration.
Clojure: The Essential Reference
take is a Clojure function that returns the first specified number of elements from a collection or returns a transducer that keeps that prefix.
- How it is used
- Uses take to keep sequence prefixes, limit processing, extract leading fields, and compose bounded reductions.
- How deep it goes
- Explains arities, outputs, laziness, transducer termination, numeric edge cases, and the invalid-input exception.
- Examples
- Demonstrates record-field extraction, a composed transducer, lazy realization, and comparison with vector subvec prefixing.
- What you can do after
- Apply it via Clojure sequence calls or transducer chains to retain a bounded prefix of data.
The Well-Grounded Rubyist, Fourth Edition
take is an Enumerable method that returns a specified number of elements from the beginning of an enumerable.
- How it is used
- Selects a finite prefix from an Enumerable, especially when iteration should stop after a requested count.
- How deep it goes
- Explains fixed-count and predicate-based stopping, then extends the behavior to lazy and infinite enumeration.
- Examples
- Demonstrates arrays, state-code prefixes, multiples of three, infinite ranges, and bounded FizzBuzz output.
- What you can do after
- Apply it via Ruby's Enumerable API to obtain finite prefixes from ordinary or lazy collections.
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Building Web APIs with ASP.NET Core
The Take method is a LINQ sequence operation that returns a specified number of elements from the beginning of a sequence.
- How it is used
- Implements page-size limits in a board-game HTTP endpoint.
- How deep it goes
- Explains its role with Skip, zero-based page calculations, defaults, DTO metadata, and a paging test.
- Examples
- Uses pageIndex = 0, pageSize = 10, and pages containing five board-game records.
- What you can do after
- Operate/configure a paged endpoint that returns only the requested number of records.
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Related concepts
- dropcontrasts with · drop is an operation that skips a specified number of elements from the beginning of a sequence or enumerable and returns the remainder.
- flowuses · A Flow is an asynchronous stream abstraction whose values are collected over time and whose producer may be cold, executing anew for each collection.
- transducerproduces · A transducer is a composable transformation that processes inputs independently of the context in which the transformation is consumed.
- lazy listuses · A lazy list is an immutable sequence whose elements and continuation are computed incrementally on demand, allowing finite or infinite sequences.
- filteringkind of · Filtering is the operation of selecting or excluding items from data or a collection according to specified criteria.
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