flowstdlib

See also: Code docs

flowstdlib is a standard library of functions and flows for flow programs to use.

Modules

flowstdlib contains the following modules:

• control
• data
• fmt
• math

Use by the Compiler

In order for the compiler to be able to find the library's flow and function definitions, the directory containing this library must be part of FLOW_LIB_PATH or specified using an instance of the -L command line option to flowc,

Building this library from Source

Libraries like flowstdlib are built using flowc with the -l option.

This builds a directory tree of all required files for a portable library, including:-

• documentation files (.md MarkDown files, generated .dot files and generated SVG files)
• TOML definition files for flows and functions
• Function implementations compiled to a .wasm WASM file for each function.
• A manifest.json manifest of the libraries functions and where the implementations (.wasm files) can be found.
  This is used by the Runtime to be able to load it.

Native use by a Runtime

It can be compiled and linked natively to a (rust) run-time. flowr offers the -n option to specify this use of it.

WASM use by a Runtime

Its functions can be loaded from WASM files by flowrlib at run-time using the manifest.json file to locate them.

Configuring FLOW_LIB_PATH during development

If you are using it as part of the larger flow workspace then you just need the flow project root directory in your FLOW_LIB_PATH as described above (or added to the lib search part using the -L <dir> option).