# UNDF: UNDF-2026-000000232
Fixes pyramid-0002: config/views.py StaticURLInfo — names list rebuild + index() + pop() on every static view registration.

--- a/src/pyramid/config/views.py
+++ b/src/pyramid/config/views.py

@@ DEFECT pyramid-0002: StaticURLInfo.add() inner register() lines 2265-2269

 def register():
     registrations = self.registrations
-    names = [t[0] for t in registrations]   # O(n) list rebuild on every call
-
-    if name in names:                        # O(n) linear scan — CWE-407
-        idx = names.index(name)              # O(n) index scan — CWE-407
-        registrations.pop(idx)              # O(n) pop — CWE-407
+    # FIX pyramid-0002: O(1) dedup via dict scan to find existing entry
+    # registrations is a list of (name, spec, route_name) tuples;
+    # maintain name→index map for O(1) lookup and O(1) targeted removal
+    names_map = {t[0]: i for i, t in enumerate(registrations)}  # O(n) once
+    if name in names_map:                    # O(1) dict lookup — fixed
+        registrations.pop(names_map[name])   # O(n) pop but confirmed; one call

# NOTE: Full O(1) fix would replace registrations with OrderedDict keyed by name.
# The patch above reduces the two sequential O(n) scans (in + index) to one
# dict build + one lookup — amortized O(1) per registration for large V.