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JeffreyBenjaminBrown / digraphs-with-text

BSD 3-Clause "New" or "Revised" License
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Cheat Sheet? #16

Open no-identd opened 5 years ago

no-identd commented 5 years ago

A "dumb" cheat sheet of all Commands, Syntax & Semantics would help. The ToC of https://github.com/JeffreyBenjaminBrown/digraphs-with-text/blob/master/Hash/the-hash-language.md kind of works as this, but not really. I've tried to write a dump of it here:

Opening an empty UI: ui empty

M-v - Treat the currently entered text as something to query from the RSLT & view the results M-a - Treat the currently entered text as something to add to the RSLT, and do so Esc - Cleanly escape the UI

Semi-reserved symbols: # - adjacent to an expression indicates that the expression is (one of the labels in) a relationship template. Repeat to increase precedence/force earlier binding. (Alternatively put: Repeat to force further up in the hierarchy.) ( and ) - Encloses multi-word expressions. Useful both for explicitly & for implicitly relating relationship templates _ - "Blank", Substitute for expressions inside relationship templates (Relationship templates only contain labels)

Reserved words for parsing: /users integer "Find all Nodes that link to to the given Node" & return them. /queries - Returns the query history /all - Returns all nodes

Reserved words & symbols for querying: /any - Wildcard, matches any expression /it - Returns the subexpression that appears where /it appears in the query & - Intersection operator ("and"). Repeat to decrease precedence/force later binding. | - Union operator ("either"). Repeat to decrease precedence/force later binding. \ Difference operator ("except"). Repeat to decrease precedence/force later binding. /eval - Forces early evaluation of a subexpression. Useful for sub-queries. /branch - Recursively evaluate. Must combine with /from and /to /from /to

I have no idea yet: /mb - Similar to /branch, but more flexible - albeit I have no idea how it works because I haven't figured out pRoleMap yet. (Little help here?)

Importing/Exporting data via the GHCi prompt:

See here: https://github.com/JeffreyBenjaminBrown/digraphs-with-text/blob/master/introduction/try-the-ui.md#saving-to-disk-and-reading-from-disk

As it stands, the above cheat sheet almost certainly contains errors & remains incomplete - but I've (for now) run out of time for completing it, and will come back to it later.

no-identd commented 5 years ago

Unary relationships one might wish to consider for ones RLST: