Business Functions Library for Excel

      1. Getting Started
      2. Using The Help File
      3. Top Dozen Functions
      4. Golden Rules
      5. Excel 2007
      1. Go To
      2. Function Selector
      3. CalculateFull
      4. Calculate WorkSheet
      5. Trace Facility
      6. Quick Paste Example
      7. Tutorials
      8. Function Finder
      9. Examples
      10. Help
      11. Excel"s Function Wizard
      12. Access Internet
      13. Usage of Functions (Audit)
      14. Uninstall
      1. Time Periods
      2. Inclusive and Exclusive Dates
      3. Using Daycount
      4. Examples of DayCount
      5. Annual Date Sequences
      6. ProjMode and Inclusive Dates
      7. Date Rolling Convention
      1. Rate Projections Functions Walkthrough
      2. Accruals and Cash
      3. Repeating Formulae
      4. Range Names and References
      5. Optional Parameters
      6. Using PmtsPerYear
      7. Modelling Seasonality
      8. Calculating Interest
      9. Using Business Functions in VBA (Visual Basic for Applications)
      10. Array Functions
      11. Volatility
      12. Annual Equivalent Rates
      13. Array Function
      14. Auto Multi Functions
      15. Variable Plurality
      16. GoalSeek
      1. Introduction To the Worked Examples
      2. Daycount
      3. General Projections
      4. Business Plans
      5. Cashbasis And Periods
      6. Using Timebases
      7. Using Dates
      1. How To Generate a time scale for a structured financing
      2. How To Project Rents off a Rental Forecast
      3. How To Run a model on different time bases
      4. How To Isolate The Cause of a Errors in Cells using Trace
      1. Introduction to the Utilities
      2. Audit
      3. Synchronized Range Insert/Delete
      4. Database Edit
      5. Insert Macro Button
      6. Link Analyser
      7. Range Describer
      8. PrintScript (beta)
      9. Create Local Range Name
      1. Number Formats
      2. Apply BF"s Color Palette
      3. Bullets
      4. Color Cells
      5. Conditional Formats
      1. Validation DropDowms
      2. Validation Standards
      1. Select Excel Function
      2. Array Function Tools
      3. Sort Sheets
      4. Range Value
      5. Named Range Manager
      6. Enforce WorkBook Settings
      7. Monte-Carlo
      8. TimeChart
      1. The ".ini" file
      1. Forum
      2. Online Help
      3. Templates
      1. Conversion of Input Strings to Values
      2. List of Holidays
      3. Acknowledgements and Trademarks
      4. Published Editions Changes in Behaviour
      5. Range Handling And Constraints
      6. Dates in Excel and Business Functions
      7. Old Composite DayCount Format
      8. DayCount in Excels"s Functions
      1. NPV of Annual To Periodic CashFlows - CorrectionM
      2. Interest - Simple, Annual, Continous and Discount Factors
      1. New Functions
      2. Obsolete Functions
      3. Discontinued Functions
      4. Deprecated Functions
    Conversion of Input Strings to Values
    Some input types permit you to enter a string and BF will convert it internally
    Sometimes, particularly for option type inputs, you want to specify something like "1 Cash" instead of just "1", because its more explanatory for the user. Also, this approach works very well with Data Validation, where you can have a data validation list of something like "0 Accruals, 1 Cash".

    BF will extract a number from string, yielding 0 and 1 respectively in the above example.

    The data types that will do this conversion are any numerical input, and this includes ranges and annual sequences. It does NOT include dates, because we have not figured how to inteligently interpret all kinds of date, in all languages.

    The way the conversion works internally as that, starting from the first numeric character in the string, all the charcaters are saved to an internal buffer until the first non-numeric character. So "1 Cash" will get "1" and also "Cash 1" will get "1". Note also that "(1) Cash" will get "1", not "-1". The code we use to make the actual conversion of the buffer from a string to a number is the Boost Library"s Lexical Cast function.

    Whenever a conversion froma string to a number is done, the Trace facility will tell you. So if you are suspicious that the conversion has not been done correctly, then you can look here, and if it has been done wrong, please tell us.

Business Functions phone: +44 (0)20 8144 9374 (London UK)
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