AnalyzeTimeConsumed is a function that returns a function that can be used to analyze the time consumed.

CaptureStdout captures the output of a function that writes to stdout and returns the output content as a string.

Helper function to create a new set.

You can view the cpu profile file with `go tool pprof codetalks-cpu.prof` or visualize it on website like https://www.speedscope.app/.

You can view the memory profile file with `go tool pprof codetalks-mem.prof` or visualize it on website like https://www.speedscope.app/.

You can view the trace file with `go tool trace codetalks-trace.prof`.

WalkDir walks the file tree rooted at root, calling fn for each file or directory in the tree, including root.

Define a set as a map with keys of type string and values of type void.