👉 Deferred math, also known as lazy evaluation or postponed computation, is a programming technique where expressions are not evaluated until their results are actually needed. Instead of computing an expression immediately, it is stored as a node in a computation tree and only evaluated when the value is required. This approach can lead to significant performance improvements, especially in scenarios involving expensive or complex computations, as it avoids unnecessary calculations. For example, if you have an expression like `expr = someFunction(argument) + anotherExpression(anotherArgument)`, it is only computed when `expr` is accessed, rather than when both `someFunction` and `anotherExpression` are defined. This mechanism is particularly useful in functional programming languages and scenarios with potentially infinite data structures, as it helps manage resources efficiently and avoids runtime errors from undefined values.
