Is checking an object for a key more efficient than searching an array for a string?
95654
Performance of key lookup in JavaScript object
124040
Testing if a hash has any of a number of keys
90129
How to check if an NSDictionary or NSMutableDictionary contains a key?
96226
For..In loops in JavaScript - key value pairs
86489
What is the difference between object keys with quotes and without quotes?
38789
can we check if a key exists in a map in vf page
85180
Most efficient way to see if an ArrayList contains an object in Java
147362
Is ternary operator, if-else or logical OR faster in javascript?
84676
How do I check that multiple keys are in a dict in a single pass?
89746
What is performance of ContainsKey and TryGetValue?
155283
Best way to check if object exists in Entity Framework?
129660
Why is array.push sometimes faster than array[n] = value?
104620
Array or List in Java. Which is faster?
3001
Array versus List: When to use which?
124082
What's a faster operation, re.match/search or str.find?
141197
In JavaScript, is there an easier way to check if a property of a property exists?
79382
In Lua, how do you find out the key an object is stored in?