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Wednesday, June 30, 2010
Riley Freeman is The Karate Kid
Friday, June 25, 2010
Excel Formulas are Like Latin
=CONCATENATE(IF(ISERROR(SEARCH("-Class",B2)),"",SUBSTITUTE(B2, "-Class","")), D2)
Why is this alien? Well for a start a simple Replace() method would have done this job fine except Excel already has a REPLACE() function... which replaces text at the given indexes, WTF? OK, so they have SUBSTITUTE() that does what I want, fair enough, let's get on with it.
OK, now what if the family name doesn't contain "-Class"? I don't want to prefix the model name in that instance so my first thought is I'd use an InStr(), or IndexOf() or Contains() method to check if the string is in the family name, sorry wrong again! I have to use Excel's SEARCH() function. But do you know what makes SEARCH() oh so special? If the string isn't found in the source it THROWS AN ERROR! The endlessly helpful #VALUE! error, fun times indeed. In their wisdom Microsoft therefore ensured Excel has an ISERROR() function which, you guessed it, checks for an error. Sorted!
Finally, a simple IF() statement wrapping that ISERROR() condition and we're almost there. Just need to concatenate (yes, the function uses that name) the newly trimmed out family name with the model name and voila! Simple!
*sigh*
This is what I would have liked to write (C# mashed into Excel please!):
=B2.Contains("-Class") ? B2.Replace("-Class", " ") : "" + D2;