main.aug

Lists, tuples, sets, and maps · Source and specification

Files in this project

• main.aug

Code

Indentation

// aug-spec: "main.aug.md" explains this file. Read it before changes; refresh with aug spec.
Explanation 1Explanation 2Explanation 3
try:
    numbers = List<int>(2, 4)
    borrow numbers:
        numbers.append(value=6)
    print(value=numbers.length())
    print(value=numbers.get(index=1))
Explanation 1Explanation 2
    scores = Map<string, int>()
    borrow scores:
        scores.set(value=42, key="ada")
    print(value=scores.contains(key="ada"))
    print(value=scores.get(key="ada"))
Explanation 1Explanation 2
    print(value=scores.length())
catch IndexError error:
    print(value="unexpected index failure")

Braces

// aug-spec: "main.aug.md" explains this file. Read it before changes; refresh with aug spec.
Explanation 1Explanation 2Explanation 3
try {
    numbers = List<int>(2, 4)
    borrow numbers {
        numbers.append(value=6)
    }
    print(value=numbers.length())
    print(value=numbers.get(index=1))
Explanation 1Explanation 2
    scores = Map<string, int>()
    borrow scores {
        scores.set(value=42, key="ada")
    }
    print(value=scores.contains(key="ada"))
    print(value=scores.get(key="ada"))
Explanation 1Explanation 2
    print(value=scores.length())
}
catch IndexError error {
    print(value="unexpected index failure")
}

Compiled specification

Interactions and sequences

Startup

It sets numbers to a list of int containing 2, 4. With temporary permission to change numbers, it appends 6 to numbers. It prints the number of elements in numbers. It prints the item at index 1 in numbers. source

It sets scores to an empty map from string to int. With temporary permission to change scores, it stores 42 in scores under "ada". It prints whether scores contains the key "ada". It prints the value under "ada" in scores. source

It prints the number of elements in scores. If this work raises IndexError, it prints "unexpected index failure". source

Built-in operations follow the language reference.