Error Handling
BlitzPlus Forums/BlitzPlus Beginners Area/Error Handling
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| Greetings everyone, Currently, I am remaking a Delphi tutorial with BlitzPlus and it's going quite well. But I've hit a seemingly dead-end; I need to know how to handle a type conversion error. You see, I am making a Celcius<->Fahrenheit converter, and there is a textbox where you have to put the degrees you want to convert. Now, what will happen when the user puts in a string? It should give an error. How would I do this? |
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| If a string is entered it's the same as entering a zero because Blitz automatically converts strings into integers. Entered string: Converted to: "11".................11 (integer) "E 11th St"...........0 (integer) "WTF???"..............0 (integer) You may, or may not have noticed that Blitz+ does not have a VAL() function to convert string values to integers. The non-obvious way to validate is to accept every input as a string and parse for digits (i.e. chr$(48)-chr$(57). Kind of lame, but oh well... :/ |
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