Swift Basics

Bind a constant and print it.

Swift

let name = "Ada"
print("Hello, \(name)")

Output

Hello, Ada

Explanation

let creates a constant. String interpolation evaluates the expression in parentheses and inserts it into the output.

Explore the dry run

Guided walkthroughReady

1let name = "Ada"

2print("Hello, \(name)")

Start to inspect the source, values, and output. These prepared steps explain the published sample; grouped loop steps describe multiple iterations.

View the complete dry-run table

Prepared trace of the published program. Some rows group repeated iterations.
Step / line	What happens	State after step	Output so far
	Bind an immutable string to name.	`name = "Ada"`	—
	Interpolate name and print the greeting.	`name = "Ada"`	Hello, Ada