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indexing_core_objects
kbenoit edited this page May 30, 2019
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1 revision
In the table below, the first row for each object class is the < 2.0 version, and the second row is the proposed 2.0 change.
| object | $ |
[ |
[[ |
[ , ] |
|---|---|---|---|---|
| character | -- | index by integer, logical, or element name | -- | -- |
| -- | (same) | -- | -- | |
| corpus | access corpus list element | texts(x)[ |
docvars(x)[ |
-- |
| return single docvar | index corpus by integer, logical, or docname |
new texts(x)[
|
-- | |
| tokens | $.list |
[.list (tokens) |
[[.list (character) |
-- |
| return single docvar | (same) | (same) | ||
| dfm | -- | index dfm (rows) by integer, logical, or docname | -- | [.matrix(x, i, j, drop = FALSE) |
| return single docvar | (same) | -- | (same) | |
| fcm | -- | same as dfm | -- | [.matrix(x, i, j, drop = FALSE) |
| -- | disable? | (same) | ||
| dictionary | $.list |
[.list (dictionary) |
-[[.list (character) |
-- |
| (same) | (same) | (same) |