HOME Our another sites : Barcode.psoft.sk | support.psoft.sk | Borland.sk Home - Contact - Company  371-493-459 Now:


Czech and Slovak users
Third party
components and
software.

PSOFT
Delphi™,C++ Builder™, C# .net
Applications for Windows™

News | Delphi | ActiveX | Online | Applications | Downloads | >> REGISTER & BUY << | FAQ | Vote | Links | Licence

Special product
PSOFT software package
version 2006

Price only $299 - Buy now

Contain :
  • Barcode library
  • Barcode library with PDF417 support
  • Eval library
  • FormEdit library
  • Barcode printer
  • Barcode ActiveX
  • Labels for Windows

News ...
30.July.2006
Forums enabled.
More ...

20.July.2006
TBarcodeReaderW component for Delphi, read barcode from serial port added
More ...

15.July.2006
Added new page
More ...


Free software
  

Eval library


History | Popport | ScreenShots | Manual |

Function parser with user interface for design functions and conditions specified at runtime. Converts mathematical, string, date, goniometric, financial functions given as a string (y='sin(x)*sqrt(x+5)') and its argumets into the function value. Run-time database filters, end user friendly inteface.
Basic component is completed with more visual components. End user interface can have user friendly input of expressions and conditions, so, that final user doesn't have to know syntax of individual functions. There is a component to disposition too, which enables simple registry created expressions and conditions and their again exploitation without necessary again putting information's.

Supported functions

Operators (16) Text functions (40) Numeric functions (40)
Date & time functions (34) Goniometric funtions (23) Financial functions (10)
Conversion functions (24) Dunction with files (18) Different functions (5)
Advantages :
  • about 200 supported functions
  • extended functions:
    • Find text with errors
    • Extended goniometric functions
    • More functions working with date & time
  • runtime specified expressions
  • runtime specified calculated fields
  • more flexible than standard TTable.Filter or SQL clause where
  • nice user interface
  • composite functions
Disadvantage: Because Eval library is interpreter, execution time is 8-10x longer than compiled code. But for end user interface, calculators, grids this is very fast.

Component list :

TEval
 Basic component of TEval library. Analyze string in TEval.Expression and you can read result using TEval methods Value, AsBoolean, AsDateTime, AsString, AsFloat, AsInteger, AsVariant.
TEvaList
 Same as TEval, but can you use for more expressions, you can use same parameters for each expression.
TEvalVariableList
TEvalFnGroupCombo
TEvalFnGroupList
TEvalFnComboBox

TEvalHistoryCombo
TEvalParams
TEvalFnPanel
TEvalSimpleDesigner
TEvalDBNavigator
Which programming environment do you use at most ?
Which programming environment do you use at most ?

Delphi 3
Delphi 4
Delphi 5
Delphi 6
C++ Builder 5
C++ Builder 6
Kylix
Delphi 7
Kylix 3
Delphi 8
Delphi 2005
Delphi 2006
 
What PSOFT product is the best ?
What PSOFT product is the best ?

Barcode library
Eval library
FormEdit library
Labels for Windows
Barcode printer
Barcode ActiveX
 
Is new PSOFT website design good for you ?
Is new PSOFT website design good for you ?

Very good
Good
Average
Bad
Very bad
 
News - Delphi - ActiveX - Online - Applications - Downloads - >> REGISTER & BUY << - FAQ - Vote - Links

© PSOFT - ing.Peter Čirip, Slovak republic All rights reserved.
Borland, Delphi, C++ Builder is the trademarks of Borland Software Corporation.
Microsoft, Windows, Windows NT, Internet Explorer is the trademarks of Microsoft Corporation.
All trademarks are the sole property of their respective owners.