DFS: Use Dictionary to store visited states VS. array
1607
List of lists changes reflected across sublists unexpectedly
140674
PHP: merge two arrays while keeping keys instead of reindexing?
85821
What's the best way of implementing a thread-safe Dictionary?
5252
Access nested dictionary items via a list of keys?
73903
Why won't SparseArray let me store values with the head List?
83047
Implementing a dictionary data structure
74503
How to re-index all subarray elements of a multidimensional array?
154659
What's the best way to initialize a dict of dicts in Python?
136642
MongoDB storing arrays of ObjectId's
76647
How to store a list of objects in application settings
117591
Using Data Driven Pages (DDP) to create set of maps with same extent but different layers?
151821
Indexes: integer vs string performance if the number of nodes is the same
116402
Analogue of Python's defaultdict?
43262
Storing arrays in Set and avoiding duplicates
52829
Best practice? - Array/Dictionary as a Core Data Entity Attribute
89427
Retaining and reusing a one-to-one mapping from a sort
51774
How to filter a dictionary according to an arbitrary condition function?