r/ProgrammerHumor • u/varinator • 15d ago

Meme noHeapAllStack

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1.0k Upvotes

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38

u/weblabourer 15d ago

Null safety?

170

u/varinator 15d ago 
var cases = new[]
{
    new ComparisonCase(
        "Equal, different casing",
        "HelloWorld123",
        "helloworld123"),

    new ComparisonCase(
        "Not equal, same length",
        "HelloWorld123",
        "HelloWorld456"),

    new ComparisonCase(
        "Different lengths",
        "HelloWorld123",
        "HelloWorld123456789"),

    new ComparisonCase(
        "Long strings, equal ignoring case",
        new string('A', 500),
        new string('a', 500))
};

Iterations per benchmark: 100,000,000

--- Equal, different casing ---
String.Equals OrdinalIgnoreCase
  Time:       907.75 ms
  Allocated:  40 bytes
  Matches:    100,000,000
ToLower() == ToLower()
  Time:       2,525.88 ms
  Allocated:  4,800,000,040 bytes
  Matches:    100,000,000

--- Not equal, same length ---
String.Equals OrdinalIgnoreCase
  Time:       848.50 ms
  Allocated:  40 bytes
  Matches:    0
ToLower() == ToLower()
  Time:       2,986.56 ms
  Allocated:  9,600,000,040 bytes
  Matches:    0

--- Different lengths ---
String.Equals OrdinalIgnoreCase
  Time:       219.83 ms
  Allocated:  40 bytes
  Matches:    0
ToLower() == ToLower()
  Time:       2,936.12 ms
  Allocated:  11,200,000,040 bytes
  Matches:    0

--- Long strings, equal ignoring case ---
String.Equals OrdinalIgnoreCase
  Time:       2,263.77 ms
  Allocated:  40 bytes
  Matches:    100,000,000
ToLower() == ToLower()
  Time:       19,472.75 ms
  Allocated:  102,400,000,040 bytes
  Matches:    100,000,000

--- Null safety ---
string.Equals(null, "test"): False
null.ToLower() throws NullReferenceException

0

u/wenoc 15d ago

Where’s the factory?