gperf

[JuhaManninen]

FYI
I wanted to experiment with perfect hash functions and tables because it was mentioned in this video.
https://www.youtube.com/watch?v=DMQ_HcNSOAI

This is my input file keywords.gperf.

Code: [Select]

struct month { char *name }
%%
january
february
march
april
may
june
july
august
september
november
december

Then a command "gperf keywords.gperf > perfhash.c"
gave me (among other useless C-code) a hash function that returns 0.

Code: C  [Select][+][-]

1. static unsigned int
2. hash (register const char *str, register size_t len)
3. {
4.   (void) str;
5.   (void) len;
6.   return 0;
7. }
8.  

Some people get proper hash functions so something is wrong in my input. I didn't find any simple example tutorial.
Anyway, always something happens with C-code...

[jamie]

I find C examples all over the place, there is something particular about what you are looking for?
https://github.com/Genbox/gperf-archive

Something to look at, I guess.

Jamie