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ID: csharp-best-practices/indexof-checks
Language: C#
Severity: Warning
Category: Error Prone
When using Indexof
or LastIndexOf
, using > 0
may miss the first item of the collection (string, list, etc). Instead, the code should use >=0
to take the first element into account.
using System.Net;
class MyClass {
public static void routine(string str, string str2)
{
str.IndexOf(str2)>0;
str.IndexOf(str2)>0;
str.LastIndexOf(str2)>0;
}
}
using System.Net;
class MyClass {
public static void routine(string str, string str2)
{
str.IndexOf(str2)>=0;
str.IndexOf(str2)>=0;
str.LastIndexOf(str2)>=0;
if (serverPackages.Any(x => x.Version.CompareTo(currentVersion) > 0)) {
}
}
}
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