What is swizzling?

Wikipedia [https://en.wikipedia.org/wiki/Swizzling_(computer_graphics)]

• Common Operation in GPGPU applications
• A = {1,2,3,4} and components are called x, y, z, w
• B = A.wwxy
• B equals {4, 4, 1, 2}

How to do it in C++?

• Union Trick
• Swizzle-Proxy Template
• CxxSwizzle (wc -l include/swizzle: 3230 lines)

In general by generating upfront all combinations.

How to do it in D?

By simply overriding opDispatch. Generate what you need, when you need it.

Examples with tests: vector.d