Most efficient way to clear a Java HashMap
50364
Map.clear() vs new Map : Which one will be better?
128370
Is there a c# equivalent of Java ConcurrentHashMap
78140
Clearing a string buffer/builder after loop
548
What is an efficient way to implement a singleton pattern in Java?
115499
Java: Best way to store to an arbitrary index of an ArrayList
96799
What is the best way to clear all controls on a form C#?
7023
Java time-based map/cache with expiring keys
68736
How do I erase an element from std::vector by index?
150627
Most efficient method to empty the contents of a file
147372
Remove duplicates from ArrayLists
89487
Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
15548
Is a Java hashmap search really O(1)?
53557
Java: A "prime" number or a "power of two" as HashMap size?
1959
How do I efficiently iterate over each entry in a Java Map?
112728
What's the best way to get the last element of an array without deleting it?
36363
Remove even numbers from an ArrayList
93555
HashMap with multiple values under the same key