Case statement

As explained in D3.js in Action, Third Edition

A switch statement selects and executes code based on which case matches an expression's value.

How D3.js in Action, Third Edition covers it

How deep it goes

Demonstrates `switch (true)` with ranges, `break`, `default`, and Svelte reactivity, without discussing language internals.

Examples

Uses screen-width breakpoints to size an SVG and arrange a Van Gogh visualization grid into one, two, or three columns.

What it assumes

Assumes basic JavaScript expressions and Svelte component syntax while demonstrating the responsive branching pattern concretely.

What you can do after

Apply it via Svelte to recalculate SVG dimensions and layout choices whenever the browser width changes.

How it connects

Connects switch statements with Svelte reactivity, responsive design, SVG, and data visualization grids.

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Also explained in

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  liveBookmanning.com
  Learn Go with Pocket-Sized ProjectsA switch statement selects among multiple execution branches by evaluating an expression against case conditions.
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  liveBookmanning.com
  The Well-Grounded Rubyist, Fourth EditionA Ruby case statement is a conditional expression that selects execution based on matching a value against alternatives.
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  liveBookmanning.com
  Clojure: The Essential ReferenceA switch statement is a control-flow construct that selects an execution branch by matching a value against alternative cases.
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  liveBookmanning.com
  100 Java Mistakes and How to Avoid ThemA switch statement is a Java control-flow statement that selects and executes a branch based on the value of an expression.
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  liveBookmanning.com
  Kafka Streams in Action, Second EditionA CASE statement is a SQL conditional expression that evaluates conditions and returns a corresponding result.
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  liveBookmanning.com
  Modern C, Third EditionA switch statement is a C selection statement that transfers control to a matching case or default label based on an expression's value.
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  liveBookmanning.com
  Data-Oriented Programming: Reduce software complexityA switch statement selects and executes code according to the value of an expression or discriminant.
• 

  liveBookmanning.com
  Modern CA switch statement is a C selection construct that chooses among multiple execution paths based on the value of an expression.

Compare how 9 books explain case statement →

Related concepts

• conditional logicalternative to · Conditional logic is a programming technique that selects execution paths, actions, or result values according to evaluated conditions.
• break statementuses · A break statement terminates the nearest supported enclosing loop, switch, or similar control construct and transfers control to the following statement.
• when expressionalternative to · A when expression is a Kotlin multi-branch conditional expression that selects a result by matching conditions or a subject value against alternatives.

This explainer was generated by Manning's knowledge graph from the text of D3.js in Action, Third Edition. The section links point to the parts of the book it draws on.