lever | A programming language in the Perl/Python/Ruby group | Interpreter library
kandi X-RAY | lever Summary
kandi X-RAY | lever Summary
Lever programming language is dynamically typed language designed & programmed by Henri Tuhola. It has capabilities to absorb features from other languages. Otherwise it is very generic purpose programming system with a hint of inclination towards interactive graphics and audio programming. Lever used to be a study piece. Then it started gaining useful features. I realised it could be something worthwhile if worked on. Lever is meant for writing whole, standalone interactive computer programs that bundle enough lever runtime along to run without other software installed on the system. The bytecode objects provided by Lever compiler can be distributed without the source code. It is optional for end user to compile anything afterwards. Lever presents a scoped module architecture where individual modules can be plugged in and out and interactively reloaded while the remaining program is running, this can be done from inside or outside the programs. While a module scope is introduced into a directory, it may also introduce a new language that is used to interpret the loaded files. As computing power and capabilities increase, even very complex computer programs can be written entirely in smoother, simpler to use and more expressive languages. In past these kind of languages were preferred for writing simple scripts. Lever shares a lot with languages such as Python or Javascript. One thing it doesn't share them is the niche. Lever is meant for designing serious software. Absorption of language features is possible because it is possible to add new rules into the grammar and into the compiler, or remove existing ones if they are not used. The newly gained language can be then either built into custom distribution or attached into a scope when running an ordinary distribution. More ways to extend the language in less invasive ways are also on planning stage. Advantages of Python to lever is that it's perfectly good for writing scripts. It doesn't change often, it's coming along nearly every Linux distribution. But this turn around fast if you consider to do interactive graphics intensive desktop apps on Python. Lever has most basic vector arithmetic supported by the runtime and there is hardly competiting implementations because the one in runtime will be very good and supported. And there's intent to have excellent graphics libraries embedded into the lever runtime in the future. Your vector algebra will be as clear as if copied from an algebra book.
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Trending Discussions on lever
QUESTION
Sorry for the messy codebase. I am new to C++.
I'm trying to tie a loop and function together. (1) A moisture sensor and (2) a servo to turn a lever on and off based on moisture.
I'm receiving an error that 'servo' cannot be used as a function. I've tried changing servo to some other name. I'm not using servo anywhere else, such as a variable, so that doesn't seem like the issue.
Does anyone have any other advice?
...ANSWER
Answered 2021-Jun-10 at 04:55The problem is in that you try to use the servo()
function before properly declaring it. First, you need to declare a function before it can be mentioned in your code. Second, your definition for the servo()
is incorrect. The int servo(lever)
, where lever
is not a type. You should look toward the following: int servo(bool lever);
, where lever
is a parameter of type bool
which the servo()
function takes.
Then, your function does not return anything, it only has some "side-effects" such as myservo.write(pos);
. So, it should be void
.
Try the following arrangement:
QUESTION
I am accessing the other database using elastic queries. The data source was created like this:
...ANSWER
Answered 2021-Jun-02 at 00:46The CREATE EXTERNAL DATA SOURCE Syntax doesn't support the option CONNECTION_OPTIONS = 'ApplicationIntent=ReadOnly'
. We can't use that in the statements.
If you want achieve that readonly request, the way is that please use the user account which only has the readonly(db_reader) permission to login the external database.
For example:
QUESTION
I need to implement a function which is triggered only when all of range inputs (5 sliders) have a maximum value. I tried to do it like this:
...ANSWER
Answered 2021-May-19 at 21:37You don't need to add a change
event listener inside the onchange
function. That function already runs when the slider is changed, you should just do what you want there. The way you're doing it, you're adding an event listener the first time, and that event listener won't run until the next time the event occurs.
There's no need to use ranges[i].getAttribute('value')
. That's used for the initial value of the slider. When the user is interacting, you use ranges[i].value
to get the current value.
QUESTION
First of all, I know this topic looks really similar to this other topic talking about extending Express Request object using Typescript
Basically, I try to do the same thing but with Polka this time
Has anyone managed to do this?
The path I followed is similar to this
At project root lever I created this folder structure :
...ANSWER
Answered 2021-May-17 at 20:34I settled with first casting IncomingMessage
to Request
.
QUESTION
I have a 3 deep array. Currently, the code will isolate a record based on one field ($profcode) and show the heading. Eventually, I am going to build a table showing the information from all the other fields. The code so far is using in_array and a function that accepts $profcode. I am unsure if (and how) I need to use array_keys() to do the next part when I retrieve the "Skills" field. I tried:
...ANSWER
Answered 2021-Apr-23 at 21:05I picked from your code and ended up with this...The find function is fine as is...just replace this section
QUESTION
In the context of Domain Driven Design and .NET, how should I model direct interaction with a remote SQL Server (using a System.Data.SqlClient.SqlConnection
)?
I need to do things like call a stored procedure and get back an ID. Later I might need to do things like getting a list of entities and their IDs so I can create local analogues with soft references to those.
By my understanding, DDD says such functionality should be part of domain services, if while interacting with the external system we also need to check core business rules, or be part of application services if calling the external system is just a side-effect that has no bearing on preserving the core business invariants.
Domain services are closer to the core domain, while application services are a layer up from that. Here's my dilema then: where should I put this logic?
Is it okay to add a reference to System.Data.SqlClient.SqlConnection
in my Domain project (which is where the core domain model is)? I feel bad thinking about this. I feel like this is not part of the domain service concern.
Or is better to add this reference to System.Data.SqlClient.SqlConnection
in my Application project (which depends on Domain and holds application services) and create a specialised application service for interacting with the remote SQL Server? And then that application service will call into the domain (via a repository, or use a domain service) to locally save the remote ID after it has been created in the remote server by using System.Data.SqlClient.SqlConnection
.
What do you recommend?
EDIT
I realised that my question might be too broad or I'm not giving enough information.
In my solution, which is using the ABP.io framework, I have these projects:
Project Description Acme.Bomb.Domain Core domain model, contains aggregates, entities and value objects. Acme.Bomb.Domain.Shared Shared kernel, contains enums, constants, utils, custom attributes, and even some shared value objects that will never change depending on context, and I didn't want to duplicate their code. Acme.Bomb.EntityFrameworkCore Contains my DbContext(s) and low lever infrastructure code for persisting data. Acme.Bomb.EntityFrameworkCore.Migrations Contains database migration code specific to EF Core. Acme.Bomb.HttpApi REST API implementation, exposes application services as REST endpoints. Acme.Bomb.HttpApi.Host REST API runtime server. Acme.Bomb.Application Application layer, contains app service implementations, including simple CRUD services or services that call to other external (REST) services, repository implementations, etc. Acme.Bomb.Application.Contracts Application layer contracts, contains interface declarations for everything implemented in Acme.Bomb.Application.What I want to do is write an application service that uses SqlConnection
directly, like this:
ANSWER
Answered 2021-Apr-23 at 07:58In the context of Domain Driven Design and .NET, how should I model direct interaction with a remote SQL Server (using a
System.Data.SqlClient.SqlConnection
)?
Exactly the same way you'd abstract any other infrastructure concerns. Given you seem to be connecting to an external system here I'd probably consider this an anti-corruption layer, but in the end it's just an interface defined in the domain
and implemented in the infrastructure
layer.
So basically you can expect to have an interface like ISomeService
in the domain
layer and an implementation of that interface in the infrastructure
layer. The application service would communicate with the external system through that interface rather than using a SqlConnection
. Make sure that the ISomeService
abstraction is driven by business concepts rather than technical details as much as possible or else it won't be a very useful abstraction.
Have a look at the CollaboratorService
interface and implementation for a concrete example.
QUESTION
Consider the following pandas dataframe:
this is an example of ingredients_text :
farine de blé 34% (france), pépites de chocolat 20g (ue) (sucre, pâte de cacao, beurre de cacao, émulsifiant lécithines (tournesol), arôme) (cacao : 44% minimum), matière grasse végétale (palme), sucre, 8,5% chocolat(sucre, pâte de cacao, cacao et cacao maigre en poudre) (cacao: 38% minimum), 5,5% éclats de noix de pécan (non ue), poudres à lever : diphosphates carbonates de sodium, blancs d’œufs, fibres d'acacia, lactose et protéines de lait, sel. dont lait.
oignon 18g oil hell: kartoffelstirke, milchzucker, maltodextrin, reismehl. 100g produkt enthalten: 1559KJ ,energie 369 kcal lt;0.5g lt;0.1g 909 fett davon gesättigte fettsāuren kohlenhydrate davon ,zucker 26g
I separated the ingredients of each line into words with the folowing code :
...ANSWER
Answered 2021-Apr-16 at 14:52df = pd.DataFrame({'ingredient_text': ['a%bgC, abc, a%, cg', 'xyx']})
ingredient_text
0 a%bgC, abc, a%, cg
1 xyx
QUESTION
We have one use case. Let's suppose I have two documents as given below.
...ANSWER
Answered 2021-Apr-14 at 13:38Demo - https://mongoplayground.net/p/bluMAU_0Dre
Use $objectToArray { "$objectToArray": "$test" }
convert to array
get the size $size os array
$gt check if it's more than 1
QUESTION
I have a couple of forms that each contain a submit button.
Html example:
...ANSWER
Answered 2021-Apr-01 at 08:40For dynamically added elements you need to use event delegation with the .on()
method, so you were on the right track.
This should work for you:
QUESTION
I have my projects that have many packages which import each other and import outside packages. When I make a change to one of my low lever packages, and then push it to git it is fine and works in that section. When I go get it for use in another project that was working perfectly I now get this go get this error:
...ANSWER
Answered 2021-Mar-28 at 18:51The go.mod
file at github.com/xdg/scram declares itself as github.com/xdg-go/scram
:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install lever
Visual Studio Code - Easily available on Windows and Linux.
GEdit - Easily available on Linux.
Vim - used by author, has steep learning curve. You can look, but it may be better to use either one of the above ones at first time.
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