Is `std::bind` Obsolete in C 14 with the Rise of Lambdas?

Replacing std::bind with C 14 Lambdas: Is Bind Obsolete?

C 14 lambdas have emerged as a powerful tool for functional programming, raising questions about the continued relevance of std::bind. While lambdas now offer most of the functionality previously provided by bind, there are some scenarios where bind may still hold an advantage.

Current Use Cases for std::bind

In C 11, bind excelled in three specific areas:

• Overloading arguments for function objects
• Capturing expressions instead of identifiers
• Moving variables while capturing

Advancements in C 14 Lambdas

C 14 addresses the limitations of lambdas in C 11, allowing them to:

• Move captured variables as rvalues
• Capture expressions
• Overload arguments for function objects
• Perfect-forward arguments

Disadvantages of std::bind

Despite these improvements, std::bind still exhibits some drawbacks:

• It binds by name, leading to ambiguity with overloaded functions.
• Functions bound using bind may not be inlined, reducing performance.

Conclusion

While C 14 lambdas have significantly reduced the need for std::bind, there remain specific scenarios where bind provides advantages. In most cases, however, lambdas offer a more convenient and efficient alternative for functional programming tasks. Therefore, it is wise to favor lambdas over bind in modern C code.

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