Compiler Performance Issue in BlockGridView.swift

[jchillah]

The Swift compiler is unable to type-check the ForEach expression in BlockGridView.swift within a reasonable time. This issue occurs at line 67, where a complex mapping operation is performed inside ForEach.

Steps to Reproduce:

Open BlockGridView.swift
Try to build the project
The compiler fails with the message:
"The compiler is unable to type-check this expression in reasonable time; try breaking up the expression into distinct sub-expressions."

Expected Behavior:

The project should compile without performance issues.
Actual Behavior:

Compilation takes too long or fails due to the complexity of the expression.
Proposed Fix:

Move the .map { ... } operation outside of ForEach to reduce the computational overhead.
Use explicit indices instead of inline transformations to optimize type-checking.
References:

Related Swift compiler issue: Swift Compiler Performance Guide