Getting Started

From Erights

This page contains some helpful tips for people who are planning on learning E.

Where to start

• You should have basic knowledge of Java and its class path system.
• Download and install E
• Read the Walnut - it is the most concise text on the E language and library.
• Bookmark the ELib api.
• Either download the E source or open the e.jar (for example with unzip) and take a look around.
• You can get information about E objects by using the help() method. For example, open rune and enter:

? help([])

You will get information about the ConstList class and its methods.

• Syntax-props-default.txt contains information about various language constructs not explained elsewhere at this point. In the E distribution, it is stored as: org.erights.e.elang.syntax/syntax-props-default.txt.
• The source also contains a number of emakers that can be used when developing programs. For example:
  • org.erights.e.facet.makeStoneCast.emaker: An implementation of the Facets pattern
  • org.erights.e.facet.makeCaretaker.emaker: An implementation of the Revocable Capabilities pattern
  • org.erights.e.elib.slot.makeLamportSlot.emaker: An implementation of the EverReporter pattern/interface

Documentation and help

• The Walnut
• The ELib api
• Documentation on the ERights homepage. See List_of_papers
• The E mailing list. You can search the archives using google by including "site:eros-os.org" in the search field.

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