In Scala, the lazy modifier delays the initialization of a variable until it is accessed for the first time. This is known as lazy evaluation. It can improve performance by avoiding unnecessary computations and side effects until they are actually needed. The lazy keyword is especially useful in scenarios involving resource-intensive operations, or when dealing with circular dependencies. By deferring the evaluation, it helps in managing dependencies more effectively and can lead to more efficient memory usage. Using lazy, variables are computed once and cached for subsequent accesses, ensuring that the computation is not repeated.
This Scala program demonstrates the use of the lazy modifier. The lazy variable lazyValue is initialized only when it is accessed for the first time. Subsequent accesses do not trigger re-evaluation, showcasing how lazy evaluation can optimize performance by deferring and caching computations.
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