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authorNadrieril2019-05-06 23:17:26 +0200
committerNadrieril2019-05-06 23:20:47 +0200
commit60129b7d1c0ea8bdf2ec666fa51957e97465e88f (patch)
tree2118155537989a1a3bfa6c51b5c476651a0ef93e /dhall/src/errors/UnusedHandler.txt
parent423fdeebe9247b16744fae4b50df415bbd08be04 (diff)
Consolidate errors in the error module
Diffstat (limited to 'dhall/src/errors/UnusedHandler.txt')
-rw-r--r--dhall/src/errors/UnusedHandler.txt32
1 files changed, 0 insertions, 32 deletions
diff --git a/dhall/src/errors/UnusedHandler.txt b/dhall/src/errors/UnusedHandler.txt
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index 2e46a12..0000000
--- a/dhall/src/errors/UnusedHandler.txt
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@@ -1,32 +0,0 @@
-Explanation: You can ❰merge❱ the alternatives of a union using a record with one
-handler per alternative, like this:
-
-
- ┌─────────────────────────────────────────────────────────────────────┐
- │ let union = < Left = +2 | Right : Bool > │
- │ in let handlers = { Left = Natural/even, Right = λ(x : Bool) → x } │
- │ in merge handlers union : Bool │
- └─────────────────────────────────────────────────────────────────────┘
-
-
-... but you must provide exactly one handler per alternative in the union. You
-cannot supply extra handlers
-
-For example, the following expression is $_NOT valid:
-
-
- ┌───────────────────────────────────────┐
- │ let union = < Left = +2 > │ The ❰Right❱ alternative is missing
- │ in let handlers = │
- │ { Left = Natural/even │
- │ , Right = λ(x : Bool) → x │ Invalid: ❰Right❱ handler isn't used
- │ } │
- │ in merge handlers union : Bool │
- └───────────────────────────────────────┘
-
-
-You provided the following handlers:
-
-↳ $txt0
-
-... which had no matching alternatives in the union you tried to ❰merge❱