Skip to content
    Computer Science GCSE

    Immutability

    What Immutability means in Computer Science GCSE, as defined for OCR.

    Definition of Immutability

    Check what you remember

    Read the wording for your board, then hide it and explain Immutability in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: OCR

    Operations return a new string rather than changing the original, so strings cannot be changed in place.
    OCR · Additional programming techniques (study guide)

    Topics that use Immutability

    Related terms

    Using Immutability in the exam

    Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.

    Practise Computer Science questions

    Create a free account to answer exam-style questions on this topic and get feedback on your answers.

    Start free

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    All Computer Science GCSE terms