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What does "runtime" mean in programming?
runtime is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
The period when a program is executing. Runtime errors occur while the program is running, as opposed to compile-time errors which are caught before execution. The runtime can also refer to the environment in which code executes.
Example
"The null pointer exception only appears at runtime, not during compilation."
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