Position & Inventory Functions

type position

A position is a single amount held at cost.

Example: 10 HOOL {100.30 USD}

type inventory

A collection of multiple positions is an inventory.

Positions can be summed up, resulting in inventories.

Functions to inspect or modify positions and inventories:

• abs() - Absolute value.

• convert() - Coerce an inventory to a particular currency.

• cost() - Get the cost of all positions in an inventory.

• empty() - Determine whether the inventiry is empty.

• filter_currency() - Filter an inventory to just the specified currency.

• getprice() - Fetch a price.

• neg() - Negative value.

• possign() - Correct sign of an Amount based on the usual balance of associated account.

• units() - Get the number of units.

• value() - Convert a position to its cost currency at the market value.