Document period lookups.
This commit is contained in:
parent
ca76896ca0
commit
a0be706461
1 changed files with 16 additions and 0 deletions
|
@ -188,3 +188,19 @@ periods ```ps```. The periods are represented as
|
|||
Returns the period from the list of periods ```ps``` the given month
|
||||
```m``` falls into. If no period matches, returns ```#f```.
|
||||
|
||||
(make-period-lookup-table source)
|
||||
|
||||
* ```source``` a list of specifications
|
||||
|
||||
Creates a lookup table containing periods where each specification
|
||||
starts with a month and the rest of the list is value to be stored in
|
||||
the lookup table. The resulting lookup table contains periods with the
|
||||
last period being open-ended without ending month.
|
||||
|
||||
(lookup-by-period table)
|
||||
|
||||
* ```table``` - period lookup table
|
||||
|
||||
Looks up the value(s) as specified by the table created by
|
||||
```make-period-lookup-table``` for current month from parameter
|
||||
```(*current-month*)```.
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue