Sequential Access Pattern

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Video time: 25m54s

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Sequential Access Pattern

Updated October 24, 2018

A super common way to access items in Clojure collections is through the seq abstraction. The seq abstraction gives us the items in a collection one at a time. But what order do those come in? The order is determined by the collection itself. We look at the different options for order. which largely determine the choice of collection type we use.

Code is available: lispcast/clojure-collections

You can checkout the code in your local repo with this command:

$CMD git clone https://github.com/lispcast/clojure-collections.git 
$CMD cd clojure-collections

Next Lesson:

Remembering Duplicates Access Pattern

Another common access pattern that largely determines the choice of collection is whether you want to remember duplicates. What happens when duplicates occur? Do you remember them? Do you replace the old one? Do you keep the old one?

Clojure Collections

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Introduction to Clojure's Collections

Data structures

Vector collection

HashMap collection

List collection

Queue collection

Sorted Map collection

Sorted Set collection

Access patterns

Sequential Access Pattern

Remembering Duplicates Access Pattern

Lookup by key Access Pattern

Associate key and value Access Pattern

Dissociate a key and value Access Pattern

Count the elements Access Pattern

Equality Comparison Access Pattern

Removing an item from a set Access Pattern

Splitting a sequence Access Pattern

Containment Check Access Pattern

First-in, first-out Access Pattern

Last-in, First-out Access Pattern

Entity Usage Pattern

Index Usage Pattern

Tuple Usage Pattern

Multi-comparison Usage Pattern

Usage in an Atom

Hybrid Collections

Vectors and Lists in syntax

Collections vs sequences