nojhan/eodev
Archived
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Added lambda expression (user/automatically defined functions

Browse source
This commit is contained in:
maartenkeijzer 2005-10-16 15:38:38 +00:00
commit b4f15601cb
9 changed files with 240 additions and 49 deletions
Download patch file Download diff file Expand all files Collapse all files

20
eo/contrib/mathsym/gen/NodeSelector.cpp
View file

@ -20,21 +20,31 @@
#include <utils/eoRNG.h>
unsigned RandomNodeSelector::select_node(Sym sym) const {
return rng.random(sym.size());
// If subtree is not set (by randomnodeselector for instance, find it now
Sym NodeSelector::NodeSelection::subtree() {
if (subtree_.empty()) {
subtree_ = get_subtree(root_, subtree_index_);
}
return subtree_;
}
unsigned BiasedNodeSelector::select_node(Sym sym) const {
NodeSelector::NodeSelection RandomNodeSelector::select_node(Sym sym) const {
unsigned idx = rng.random(sym.size());
return NodeSelection(sym, idx, Sym() ); // empty subtree, find it when needed
}
NodeSelector::NodeSelection BiasedNodeSelector::select_node(Sym sym) const {
unsigned p = rng.random(sym.size());
Sym res;
for (unsigned i = 0; i < nRounds; ++i) {
Sym res = get_subtree(sym, p);
res = get_subtree(sym, p);
if (res.args().size() > 0) break;
p = rng.random(sym.size());
}
return p;
return NodeSelection(sym, p, res);
}