Comments (4)
simple proposal (a.k.a. Hack) for checking:
instead of case x of ...
allow to write case known x of
where
- semantically
known = id
- but for compiling: only generate the code for the case that the constructor is statically known (will throw an exception if this is not the case, exception should contain line number or similar)
come to think of it - this known x
could be put anywhere (not just under the case) and it will just check (at runtime) that the top constructor indeed is known.
from co4.
known x
148c8a6 provides assertKnown
and assertDefined
with the given semantics (the name known
is already taken by the allocators). Both functions require import CO4.Prelude
.
from co4.
commit 534ab80 contains very simple constraint that recurses on a known list (with unknown elements)
constraint s xs = eqNat8 s ( summe xs)
summe xs = case assertKnown xs of
[] -> nat8 0
x:xs' -> plusNat8 x (summe xs')
when running it with assertions enabled, I get an exception:
ghci CO4/Test/Assert.hs
*Main> main
Start producing CNF
*** Exception: EncodedAdt.Overlapping.constantConstructorIndex: no flags
where I was expecting that it works without exception.
from co4.
fixed by f823290
from co4.
Related Issues (20)
- Prelude.head: empty list in CPF output HOT 1
- output of labelled systems is broken HOT 3
- models must be total (patttern should end with [Any,..,Any])
- instantiation (?) fails HOT 1
- assertKnownWithMsg :: String -> a -> a HOT 1
- automatic asserts HOT 2
- represent Set Int as [Bool]
- note: moved co4/tc subdir to matchbox repo HOT 1
- support if-then-else HOT 1
- overflow in naturals leads to unsatisfiable constraint
- configurable name of top-level constraint
- transformers needs -compat?
- build error (src/CO4/Frontend/HaskellSrcExts.hs:44:87:) HOT 1
- Multiple declarations of ... HOT 2
- Applicative-like operators for Allocators HOT 2
- Configurable support for partial functions
- Illegal variable name: ‘enc[]Cons’ HOT 1
- Illegal variable name: ‘enc++PolyInstance_3235’
- fromKnown with 3rd, 4th, ... constructor of data type HOT 3
- Wrong Assertion? HOT 2
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from co4.