Call By Name vs Strict Evaluation
Developers should learn call by name when working with languages that support lazy evaluation or need to delay computation until necessary, such as in Scala for implementing custom control structures or avoiding unnecessary evaluations meets developers should understand strict evaluation because it underpins the behavior of widely used languages, enabling predictable control flow, efficient resource usage in imperative programming, and straightforward debugging due to immediate execution. Here's our take.
Call By Name
Developers should learn call by name when working with languages that support lazy evaluation or need to delay computation until necessary, such as in Scala for implementing custom control structures or avoiding unnecessary evaluations
Call By Name
Nice PickDevelopers should learn call by name when working with languages that support lazy evaluation or need to delay computation until necessary, such as in Scala for implementing custom control structures or avoiding unnecessary evaluations
Pros
- +It is useful in scenarios where arguments might be expensive to compute or have side effects that should only occur if the parameter is actually used, improving performance and enabling more expressive programming patterns like short-circuiting in logical operators
- +Related to: scala, lambda-calculus
Cons
- -Specific tradeoffs depend on your use case
Strict Evaluation
Developers should understand strict evaluation because it underpins the behavior of widely used languages, enabling predictable control flow, efficient resource usage in imperative programming, and straightforward debugging due to immediate execution
Pros
- +It is essential for performance-critical applications, real-time systems, and scenarios where side effects (like I/O operations) must occur in a specific, deterministic sequence, such as in financial transactions or embedded systems
- +Related to: lazy-evaluation, functional-programming
Cons
- -Specific tradeoffs depend on your use case
The Verdict
Use Call By Name if: You want it is useful in scenarios where arguments might be expensive to compute or have side effects that should only occur if the parameter is actually used, improving performance and enabling more expressive programming patterns like short-circuiting in logical operators and can live with specific tradeoffs depend on your use case.
Use Strict Evaluation if: You prioritize it is essential for performance-critical applications, real-time systems, and scenarios where side effects (like i/o operations) must occur in a specific, deterministic sequence, such as in financial transactions or embedded systems over what Call By Name offers.
Developers should learn call by name when working with languages that support lazy evaluation or need to delay computation until necessary, such as in Scala for implementing custom control structures or avoiding unnecessary evaluations
Disagree with our pick? nice@nicepick.dev