EFS2 , is the next evolution in eSignal Formula Script introduced with version 7.9. EFS2 functions make formula writing more macro-like and easier to code. The new EFS2 engine is backward compatible with formulas developed prior to 7.9. Here's a list of the new EFS2 features added to the eSignal formula development environment.
- Multiple Time Frame support: Built-in and custom studies may now be based on external intervals to easily create multiple-time frame studies. Prior to 7.9, this type of study required some complex coding on the users' end because there were no automated facilities to synchronize the data between intervals. This synchronization routine is now handled by the new EFS2 engine.
- External Symbol support: In addition to external intervals, Built-in and custom studies can now be based on external symbols. The time stamp synchronization routine between the two symbols is also handled by the new EFS2 engine.
- Built-in Studies enhanced: The EFS2 Built-in Study functions have been simplified to require fewer parameters and quicker access to each of their return values.
- Study-on-Study formulas simplified: The process for creating study-on-study formulas using the Built-in Studies has also been simplified to require less code. The Built-in Study functions now accept custom studies as the price source as well. The custom studies may be coded internally to the formula or they can be separate complete formulas.
- Drawing Functions enhanced: New simplified drawing functions have been added, which have a new Location parameter that allows the EFS2 engine to automatically position the graphics in the user selected location.
- Function Libraries: This is a new feature introduced with EFS2 that allows developers and users to create libraries of custom functions. These functions can be accessed by any formula with a single line of code similar to how any of the current EFS functions can be used.
- EFS2 ToolBox: This is a new tool in 7.9, accessible from the tool bar in the EFS Editor. The ToolBox lists all available EFS functions with descriptions for each parameter. This tool assists the user with the proper setup and selections for each of the functions' parameters, which can then be inserted directly into your formula code. Function Libraries may also be setup to appear in the ToolBox as well.
To learn more about the new EFS2 functions, please take a look at the EFS2 Reference material. The EFS2 reference material is also accessible from the tool bar in the EFS Editor (version 7.9 or later).
|Chapter 2 ? Values, Variables, and Literals|
|Chapter 3 ? Expressions and Operators|
|Chapter 4 ? Regular Expressions|
|Chapter 5 ? Statements|
|Chapter 6 ? Functions|
|Chapter 7 ? Working with Objects|
|Chapter 8 ? Details of the Object Model|