Benchmark a fast way to test char values. See if a char in a string equals a value.
Char test. Consider a string. We can test it with complex methods with StartsWith or EndsWith. But if we test chars directly, this can be faster.StringsStartsWith, EndsWithChar
Specialized logic. We can also arrange if-tests with chars to avoid repeated work—for example, if we want to test multiple strings starting with a letter, we can test that value once.If
A simple example. Here is a simple example of testing the first letter in a string. Here we see if the string equals the lowercase letter "t."
C# program that uses char test
static void Main()
string value = "test";
// See if first char is the lowercase T.
if (value == 't')
Console.WriteLine("First char is t");
First char is t
Some optimization. String comparisons can be optimized. We need to test a string thousands to billions of times. We benchmark an alternative way of comparing constant strings.Benchmark
Note: In many programs, there are strings that are immutable and will not change throughout the program.
And: I needed to know if the string matched one of two substrings. The code was critical.
Warning: From a high-level perspective, hard-coding multiple character compares is a poor design.