Halcyon Calc
Halcyon Calc Lite
Poll
What feature do you want in Halcyon Calc v4.1
Stats plotting
15%
Implement the FORM operation
31%
Built-in catalog of operations
8%
Built-in catalog of units
8%
Printing support
0%
iCloud support for user variables
23%
Other (add a comment)
15%
Total votes: 13
SUB
Argument Types:
Real
List
String
Result Type(s):
List
String
Invertible:
No
Valid In Expression:
No
Stack Diagram:
| String1 | Real2 | Real3 | → | String4 |
| List1 | Real2 | Real3 | → | List4 |
This operation extracts a substring or a sub-list from a string or a list. If it is provided a string and two real indices, it will return a substring between those two indices. The first character in the string begins at index 1. If Real3 is less than Real2 then an empty string is returned.
Similarly, this operation can extract a subset of the items of a list. If Real3 is less than Real2 then an empty list is returned. Otherwise, the items between these two indices is returned. Note that the first item in the list is considered to be at index 1.