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| // Example 1: Dictionaries. | |
| // Using "string" as key/value for example; could be anything. | |
| IDictionary<string, string> myDictionary; | |
| // ... | |
| // ... | |
| // Returns Perhaps<string>.NotThere if not found. | |
| var dictionaryResult = myDictionary.LookFor("MyKey"); | |
| if (dictionaryResult.IsThere) | |
| { | |
| // Throws if called on "NotThere". | |
| var string1 = dictionaryResult.Value; | |
| var string2 = dictionaryResult.ValueOrDefault; | |
| // Automatically casts to underlying type. | |
| var string3 = dictionaryResult + " and so on and so forth."; | |
| // Other stuff to do if the value is there. | |
| } | |
| // Look for stuff and operate on it in one sequence of calls. | |
| myDictionary.LookFor("MyKey").DoIfThere(value => /* Do stuff with value */); | |
| // Look for stuff and get otehr stuff based on it in one sequence of calls. | |
| var finalValue = myDictionary | |
| .LookFor("MyKey") | |
| .DoIfThere(value => /* Return stuff based on value */, "Default value"); | |
| // Example 2: Parsing text. | |
| string text; | |
| // ... | |
| text.ParseInteger().DoIfThere(value => /* Do stuff with value */); | |
| text.ParseDateTime().DoIfThere(value => /* Do stuff with value */); | |
| // and so on and so forth for long, float, double, decimal, bool | |
| // Example 3: Stuff that throws ("int" used as type for example, could be anything). | |
| var result = Perhaps<int>.Try(() => /* Stuff that may throw an exception. */); | |
| if (!result.HasError) | |
| { | |
| // Do stuff here. Now, this may seem weird, but this makes more sense when you think of | |
| // getting a list of results and filtering out errored ones and then operating further on | |
| // valid ones, etc. | |
| } | |
| // Example 4: LINQ stuff ("string" used as type for example, could be anything). | |
| IEnumerable<string> list; | |
| // ... | |
| var first = list.PerhapsFirst(x => x.ParseInteger().IsThere); // Aaha! | |
| var single = list.PerhapsSingle().DoIfThere(x => /* Do stuff with value */); | |
| var last = list.PerhapsLast(x => x.StartsWith("ABC")); |
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