How to use theses libraries

On-chain

Call any functions by it’s fully qualified name. For example (free.util-strings.string-to-decimal "300.13")
Or import the module into your code: (use free.util-strings), and then call directly the function: (string-to-decimal "300.13")
Alternatively, you can use the following syntax to import code selectively: (use free.util-strings [string-to-decimal to-string])

Off-chain

For development, using the local Pact interpreter

Modules must be loaded in a specific order to satisfy their dependencies:

(load "util-chain-data.pact")
(load "util-lists.pact")
(load "util-strings.pact")
(load "util-fungible.pact")
(load "util-math.pact")
(load "util-time.pact")
(load "util-random.pact")
(load "util-zk.pact")

If you want to use the random module, it must be initialized just after loading:

(create-table state-table)

(env-hash (hash "This is my seed"))
(reset-state)

The command (env-hash ...) is not mandatory. But it let you choose a specific seed (here: “This is my seed”) to init the random generator. Internally the random module use the Hash of the initialization transaction as a seed