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| author | Oleg Grenrus <oleg.grenrus@iki.fi> | 2022-12-10 18:10:44 +0200 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2023-01-09 21:11:02 -0500 |
| commit | d53f6f4d98aabd6f5b28fb110db1da0f6db70a06 (patch) | |
| tree | 371730f12e7f76d3ea594423b46a050481556d8d /libraries/base/Data | |
| parent | e3fff7512bbf989386faaa1dccafdad1deabde84 (diff) | |
| download | haskell-d53f6f4d98aabd6f5b28fb110db1da0f6db70a06.tar.gz | |
Add safe list indexing operator: !?
With Joachim's amendments.
Implements https://github.com/haskell/core-libraries-committee/issues/110
Diffstat (limited to 'libraries/base/Data')
| -rw-r--r-- | libraries/base/Data/List.hs | 1 | ||||
| -rw-r--r-- | libraries/base/Data/OldList.hs | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/libraries/base/Data/List.hs b/libraries/base/Data/List.hs index d7a5922031..a81c743357 100644 --- a/libraries/base/Data/List.hs +++ b/libraries/base/Data/List.hs @@ -127,6 +127,7 @@ module Data.List -- | These functions treat a list @xs@ as a indexed collection, -- with indices ranging from 0 to @'length' xs - 1@. + , (!?) , (!!) , elemIndex diff --git a/libraries/base/Data/OldList.hs b/libraries/base/Data/OldList.hs index 176c72547c..8e610ebba0 100644 --- a/libraries/base/Data/OldList.hs +++ b/libraries/base/Data/OldList.hs @@ -127,6 +127,7 @@ module Data.OldList -- | These functions treat a list @xs@ as a indexed collection, -- with indices ranging from 0 to @'length' xs - 1@. + , (!?) , (!!) , elemIndex |