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remove unused and dubious string extension method

This commit is contained in:
adelikat 2020-03-29 12:38:13 -05:00
parent 9bc5d74c67
commit a16973cbe9
1 changed files with 0 additions and 18 deletions
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18
BizHawk.Common/Extensions/StringExtensions.cs
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@ -22,24 +22,6 @@ namespace BizHawk.Common.StringExtensions
/// <returns>how many times <paramref name="c"/> appears in <paramref name="str"/>, or <c>0</c> if <paramref name="str"/> is null</returns>
public static int HowMany(this string? str, char c) => string.IsNullOrEmpty(str) ? 0 : str.Count(t => t == c);
/// <returns>how many times <paramref name="sub"/> appears in <paramref name="str"/>, or <c>0</c> if <paramref name="str"/> is null</returns>
/// <remarks>
/// occurrences may overlap, for example <c>"AAA".HowMany("AA")</c> returns <c>2</c><br/>
/// TODO except it doesn't, but <c>"AAAB".HowMany("AA")</c> does. I left this bug in so as to not break anything. --yoshi
/// </remarks>
public static int HowMany(this string? str, string sub)
{
if (string.IsNullOrEmpty(str)) return 0;
var count = 0;
var substrLength = sub.Length;
for (int i = 0, l = str.Length - substrLength; i < l; i++)
{
if (string.Equals(str.Substring(i, substrLength), sub, StringComparison.InvariantCulture)) count++;
}
return count;
}
/// <returns><see langword="true"/> iff <paramref name="str"/> is not <see langword="null"/> and all chars of <paramref name="str"/> are digits</returns>
public static bool IsUnsigned(this string? str) => !string.IsNullOrWhiteSpace(str) && str.All(IsUnsigned);