Tya v0.3 Standard Attached Library

This document defines the standard attached library for Tya v0.3.

The standard attached library is a set of .tya modules shipped with Tya. It is not a package manager and it does not download third-party code.

Importing

Standard modules use the same import syntax as user modules.

import string
import array

The module search order is:

1. The importing file's directory.
2. Directories listed in TYA_PATH, searched left to right.
3. The stdlib/ directory shipped with Tya.

Initial Scope

v0.3 starts with lightweight modules that prove the attached-library mechanism.

Included in the initial scope:

• string
• array

Deferred from v0.3:

• JSON parser
• CSV parser
• native-backed standard modules
• package manager
• remote module install
• versioned dependencies

string

import string

print string.blank("  ")
print string.present("tya")

Functions:

blank text
present text

blank(text) returns true when trim(text) == "".

present(text) returns not blank(text).

array

import array

print array.empty([])
print array.first(["tya"])

Functions:

empty items
first items

empty(items) returns len(items) == 0.

first(items) returns items[0].