Kit Numbers Every Programmer Should Know

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This post provides timing data for common operations in Kit. These numbers help developers make informed decisions about performance-sensitive code. All benchmarks were run with 100,000 iterations on compiled Kit binaries.

Basic Operations

Operation	Time
Integer addition	40 ns
Integer multiplication	30 ns
Integer division	40 ns
Integer modulo	30 ns
Float addition	30 ns
Float multiplication	40 ns
Float division	30 ns
Comparison (==)	40 ns
Comparison (<)	40 ns

String Operations

Operation	Time
String concatenation	120 ns
String interpolation	120 ns
String length	30 ns
String equality	30 ns
String contains	50 ns
String split	24 us
String reverse	100 ns

List Operations

Operation	Time
List creation [5 elements]	390 ns
List.range 0..100	5 us
List.head (5 elements)	130 ns
List.tail (5 elements)	40 ns
List.length (100 elements)	40 ns
List.nth 50 (100 elements)	130 ns
List.last (100 elements)	40 ns
List.cons (prepend)	340 ns
List.append (5 + 5)	1 us
List.reverse (100 elements)	3 us
List.contains? (100 elements)	380 ns

Higher-Order List Operations

Operation	Time
List.map (100 elements)	4 us
List.filter (100 elements)	6 us
List.fold (100 elements)	4 us
List.find (100 elements)	1 us
map |> filter |> fold (100)	15 us

Map Operations

Operation	Time
Map.empty	30 ns
Map.insert (single)	50 ns
Map.get (small map)	40 ns
Map.get (100 entries)	30 ns
Map.contains? (100 entries)	30 ns
Map.keys (100 entries)	491 us
Map.size (100 entries)	1 us

Record Operations

Operation	Time
Record creation (3 fields)	50 ns
Record field access	40 ns
Record update (spread)	40 ns

Pattern Matching

Operation	Time
Match (first case)	70 ns
Match (second case)	70 ns
Match Result (Ok)	40 ns
Match Result (Err)	50 ns
Match Option (Some)	60 ns
Match Option (None)	90 ns

Function Calls

Operation	Time
Function call (1 arg)	30 ns
Function call (3 args)	60 ns
Closure (1 capture)	50 ns
Closure (3 captures)	40 ns
Recursive fib(10)	3 us
Tail-recursive factorial(20)	27 us

JSON Serialization

Operation	Time
JSON.stringify (object)	1 us
JSON.parse (string)	6 us
JSON.stringify (array)	1 us
JSON.parse (array)	3 us

Option/Result Operators

Operation	Time
?? operator (Some)	30 ns
?? operator (None)	40 ns
?? operator (Ok)	40 ns
?? operator (Err)	40 ns
Option.map (Some)	280 ns
Option.and-then (Some)	240 ns
Result.map (Ok)	420 ns

Time Operations

Operation	Time
Time.now	90 ns
Time.rdtsc	30 ns
Time.format	360 ns
Time.components	1 us

Math Operations

Operation	Time
Math.sqrt	40 ns
Math.pow	30 ns
Math.sin	40 ns
Math.cos	40 ns
Math.log	30 ns
Math.exp	40 ns
Math.abs (int)	40 ns
Math.max	30 ns
Math.min	30 ns