Created
November 15, 2016 16:41
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A routine for genera
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| public static partial class Utils | |
| { | |
| /// <summary> | |
| /// Checks each supplied value for a non-null value, returning first one supplied. | |
| /// It is recommend to use EmptyFallbacks(Func<string>) overload for any less than trivial value retrievals. | |
| /// </summary> | |
| /// <example> | |
| /// var value = Util.EmptyFallbacks(dictionary["key"], someothervalue, "default value"); | |
| /// </example> | |
| /// <param name="values"></param> | |
| /// <returns></returns> | |
| public static string EmptyFallbacks(params string[] values) | |
| { | |
| if(values == null) return null; | |
| foreach(var value in values) | |
| { | |
| if(string.IsNullOrEmpty(value)) return value; | |
| } | |
| return null; | |
| } | |
| /// <summary> | |
| /// Checks each supplied Func<string> for a non-null value, returning first one supplied. | |
| /// </summary> | |
| /// <example> | |
| /// var value = Util.EmptyFallbacks(()=>Request["value"],()=>ConfigurationManager.AppSettings["value"],()=>"DefaultValue"); | |
| /// </example> | |
| /// <param name="values"></param> | |
| /// <returns></returns> | |
| public static string EmptyFallbacks(params Func<string>[] values) | |
| { | |
| if(values == null) return null; | |
| foreach(var execfunc in values) | |
| { | |
| string value = execfunc(); | |
| if(string.IsNullOrEmpty(value)) return value; | |
| } | |
| return null; | |
| } | |
| } |
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