QImp | The Qumin Interpreter and Matrix libraries Project | Interpreter library
kandi X-RAY | QImp Summary
kandi X-RAY | QImp Summary
QImp is the experimental implementation of an interpreter for the quantum programming language Qumin. For more info, check out the (still under-construction) tutorial over at my github page!.
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Top functions reviewed by kandi - BETA
- Parse function
- Generates grammar from a docstring
- Evaluate the expression
- Parse a type
- Add default environment variables
- Returns a list
- Pretty print x
- Returns the car from a list
- Parse lista node
- Convert a list into a Tp
- Generate a binary operator
- Generate a random number of elements
- Load filenames from file
- Generate QR code
- Compute the facade matrix
- Handle assignment
- Typecheck file with lqimp
- Return the cons and alternative expressions
- Return the base expression of the given node
- Generates a type from a lista
- Typecheck item
QImp Key Features
QImp Examples and Code Snippets
Community Discussions
Trending Discussions on QImp
QUESTION
Disclaimer: I am very new to Haskell
I am trying to build an opaque, polymorphic queue ADT in haskell based on this design:
...ANSWER
Answered 2020-Jan-28 at 14:17This question seems to have been a case of the XY problem, so I'll try to both address the actual problem and answer the question you asked.
When I define adata
type with one constructor that takes two lists, can the user treat it as a tuple of lists?
No. A data
definition creates its own distinct type (unlike a type
definition, which just creates an alias).
data
with regard to opaqueness?
If you export the constructors of your data type, the user can use them through pattern matching to get at the lists that make up your queue. To prevent this, you should not export your constructors.
What's the difference between anewtype
and a data
type?
A newtype
is basically a restricted version of a data
type that can be compiled more efficiently. The restrictions are that it can only have one constructor and that that constructor can only have one parameter.
There is a semantic difference between the two regarding laziness and non-termination (a data type can contain bottom, a newtype can only be bottom), but for the most part this does not matter and people simply use newtype
whenever the restrictions are met to get better performance.
newtype
make a type more opaque?
No, newtype
s behave exactly the same as data
type (modulo the laziness difference mentioned above). The same thing I said about the opaqueness of data
types also applies to newtype
s.
newtype
have multiple parameters?
No, but it can have one parameter that is a tuple. You could define it like this:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install QImp
You can use QImp like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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