coll.h

// stretchy buffer, works directly on typed c pointers
afree(a)
apush(a, x)
alen(a) // lvalue, so you can do things like a[i] = a[--alen(a)]
aend(a) // a + alen(a)
areserve(a, n)
aresize(a, n)

// uint64 -> uint64 hash table
hinit(h, n)
hfree(h)
hput(h, k, v) // casts k and v to void *
hget(h, k) // return void *
hgetu(h, k) // return uint64
hgeti(h, k) // return int64

// global string table. pattern: read external string into temp buffer, sintern to get stable pointer, then use pointer hash
sintern(s)