IsSuccess

isSuccess is a term used in programming to denote whether an operation completed successfully. It is typically represented as a boolean value, where true indicates success and false indicates failure. The naming convention is common across languages, and the exact form may be a function (isSuccess()), a property (isSuccess), or a field (success) on a result object.

Usage varies by context. In procedural code, an isSuccess flag can drive control flow after a function call. In data transfer or API responses, a result object may include an isSuccess field alongside data and potential error details. In unit tests, assertions may check that isSuccess is true to verify correct behavior.

isSuccess relates to error handling and reporting. While a boolean flag communicates a basic outcome, it often does not convey the reason for failure. Many designs pair isSuccess with additional information such as an error message, error code, or exception. More expressive patterns include result types like Result, Either, or similar constructs that carry both a value and an error when appropriate.

Naming and design considerations are important. Consistency with language and project conventions is advisable, so teams may choose isSuccess, isSuccessful, or simply success depending on the surrounding style. Some domains prefer explicit status codes or status fields rather than a boolean flag to avoid ambiguity between “operational success” and business conditions.

In practice, isSuccess is a simple, widely understood indicator of operation outcome, but it is most effective when used alongside other contextual data that explains why an operation failed or how to recover.