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| author | Klaus Aehlig <klaus.aehlig@huawei.com> | 2024-08-13 13:13:29 +0200 |
|---|---|---|
| committer | Klaus Aehlig <klaus.aehlig@huawei.com> | 2024-08-14 15:29:17 +0200 |
| commit | 7482b4b90b376cc1d1d64ef827d9014879f0ef84 (patch) | |
| tree | e379fee1064b9dc52b812c4f6b578b1012ebfd77 /CHANGELOG.md | |
| parent | 21359a210cecf01d0c0e3ff47873692bdb1390a9 (diff) | |
| download | justbuild-7482b4b90b376cc1d1d64ef827d9014879f0ef84.tar.gz | |
expression language: add nub_left
Originally, the expression lanuage only contained a function to
deduplicate a list, keeping only the right-most occurence. The
reason was that this is the order needed for linking: a library
providing an open symbol has to come on the command line after the
library using that symbol (and hence making it an open symbol).
However, by now use cases have emerged that require a topological
sorting where definition comes before use; also, when composing
the value of PATH from fragments, we usually want to keep the first
occurrence in order for it to take precedence. Therefore, also
add "nub_left" as built-in function, allowing a more condense (and
slightly more efficient) description in rules instead of the
revserse-nub_right-reverse pattern.
Diffstat (limited to 'CHANGELOG.md')
| -rw-r--r-- | CHANGELOG.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/CHANGELOG.md b/CHANGELOG.md index 56709f0f..22581d9e 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -21,8 +21,8 @@ A feature release on top of `1.3.0`, backwards compatible. at the old location will not be used anymore while still using disk space. - The expression language has been extended to contain quote and - quasi-quote expressions, as well as a new built-in function - `"from_subdir"`. + quasi-quote expressions, as well as new built-in functions + `"from_subdir"`, `"nub_left"`. ### Fixes |