ddd | Domain Driven Design framework for software simplicity | Functional Programming library

 by   node-ts TypeScript Version: @node-ts/ddd-types@0.1.4 License: MIT

kandi X-RAY | ddd Summary

kandi X-RAY | ddd Summary

ddd is a TypeScript library typically used in Programming Style, Functional Programming applications. ddd has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Domain driven design (DDD) is an approach to software design that values simplicity and modeling code as closely to the business domain as possible. This results in code that can be easily understood by the business and evolved as the needs of the business domain change. By isolating domain code away from all other concerns of the system like infrastructure, security, transportation, serialization etc; the complexity of the system grows only as large as the complexity of the business or problem domain itself. If you are new to the concepts of DDD, it's highly recommended to do some background reading to grasp the motivations for this approach and to decide if it suits your application. If you have already decided to use DDD for your application, this package is part of suite of purpose-built libraries that help you and your teams write large distributed node applications that are maintainable and easy to change.
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              ddd has a low active ecosystem.
              It has 444 star(s) with 35 fork(s). There are 10 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 5 open issues and 2 have been closed. On average issues are closed in 4 days. There are 5 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of ddd is @node-ts/ddd-types@0.1.4

            kandi-Quality Quality

              ddd has 0 bugs and 0 code smells.

            kandi-Security Security

              ddd has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              ddd code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              ddd is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              ddd releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.

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            ddd Key Features

            No Key Features are available at this moment for ddd.

            ddd Examples and Code Snippets

            No Code Snippets are available at this moment for ddd.

            Community Discussions

            QUESTION

            Match all elements with n occurrences
            Asked 2022-Apr-01 at 04:49

            I want to select the same element with exact n occurrences.

            Match letters that repeats exact 3 times in this String: "aaaaabbbcccccccccdddee"

            this should return "bbb" and "ddd"

            If I define what I should match like "b{3}" or "d{3}", this would be easier, but I want to match all elements

            I've tried and the closest I came up is this regex: (.)\1{2}(?!\1) Which returns "aaa", "bbb", "ccc", "ddd"

            And I can't add negative lookbehind, because of "non-fixed width" (?

            ...

            ANSWER

            Answered 2022-Mar-29 at 06:03

            One possibility is to use a regex that looks for a character which is not followed by itself (or beginning of line), followed by three identical characters, followed by another character which is not the same as the second three i.e.

            Source https://stackoverflow.com/questions/71656063

            QUESTION

            how to create a new column in a dataframe based on conditions in another dataframe?
            Asked 2022-Mar-22 at 09:04
            df1:
            
            Variables     left      right
            0  AUM           -0.001    28.20
            1  AUM           28.20     40.28
            2  AUM           40.28     58.27
            3  AUM           58.27     80.72
            4  AUM           80.72     100.00
            0  ABS           -88.01    200.72
            1  ABS           200.72    480.72
            2  ABS           480.72    800.20
            0  LS            10000     200000
            1  LS            200000    400000
            
            ...

            ANSWER

            Answered 2022-Mar-22 at 09:04

            You can use pd.cut and avoid loops inside the binning function:

            Source https://stackoverflow.com/questions/71568366

            QUESTION

            I can make an div fade in onclick, but how do i make it fade out?
            Asked 2022-Mar-18 at 19:49

            I was working on making this TOS page but ran into a problem with the fade-in/fade-out animations.

            I got the div to fade in when the button is clicked but don't know how to let it fade-out when the button is clicked again. Any tips would be helpful

            https://jsfiddle.net/MakkerHeineken/khs8b43f/1/

            ...

            ANSWER

            Answered 2022-Mar-18 at 19:49

            made the code for the toggle you probably don't need that. The main part is the fade-out animation:

            Source https://stackoverflow.com/questions/71499593

            QUESTION

            CSS Flexbox with position absolute confusion
            Asked 2022-Mar-05 at 06:14

            I'm confused how this works could someone walk me through what exactly happened?

            ...

            ANSWER

            Answered 2022-Mar-05 at 06:14

            Preface:

            • The top, right, bottom, and left properties are collectively referred to as "box inset" properties.
            • Keep in mind that all CSS properties that aren't explicitly set will have default values that are either "initial" values or inherited values.
              • So unless explicitly specified otherwise, every element has position: static;.
              • The initial value for all of the box-inset properties is auto, regardless of their element's position and display property.
                • But the behaviour of the auto value does depend on the element's position and/or formatting context.
            • CSS has a lot of surprising and counter-intuitive behaviour.
            Why fills the width of the page:
            • has display: flex;, which makes it a flex-parent.
              • All immediate child elements (with certain exceptions) of a flex-parent, that have position: static, are flex-items.

              • Therefore

                is a flex-item.

              • Therefore

                is not a flex-item because it has position: absolute;.

                • (Generally speaking) elements with position: absolute; are not subject to their layout-container's layout rules and are re-positioned with absolute-coordinates where the origin is in their-closet-ancestor-element-without-position: static; (yes, that's a mouthful).
                  • This is why position: relative; is being applied to .
            • Therefore is a flex-parent with only one flex-item, despite having two element children.
              • And because it has justify-content: center; it means that its single flex-item () will be centered.
            • Also, because has display: flex; (rather than display: inline-flex) it means that is a block-level element, so it fills the width of its container, which is , which fills the width of the viewport.
              • And because also has width: 100%; (which becomes flex-basis: 100%;) it means the will fill the width of .
              • Therefore , , and (in that order) will fill the width of the viewport.
            Why

            is centered:

            • As

              uses auto for all its box inset properties (i.e. top, right, etc) with position: absolute; then the computed value of those properties is the same as if

              was position: static;.

              • However, if

                was position: static; then it would be a flex-item and would share its flex row with

                - which would mean it would be located somewhere off to the right of the line (due to justify-content: center;).
                • But it's actually centered, because this is a special-case scenario that's specifically specified in the specification...

                  https://www.w3.org/TR/css-flexbox-1/#abspos-items

                  4.1. Absolutely-Positioned Flex Children

                  As it is out-of-flow, an absolutely-positioned child of a flex container does not participate in flex layout.

                  The static position of an absolutely-positioned child of a flex container is determined such that the child is positioned as if it were the sole flex item in the flex container, assuming both the child and the flex container were fixed-size boxes of their used size. For this purpose, auto margins are treated as zero.

            It's well-worth reading the rest of the section as it also covers other brain-stretching scenarios, like "what if align-self: center; is used"?

            Source https://stackoverflow.com/questions/71359535

            QUESTION

            How can I create a doughnut chart with rounded edges only on one end of each segment?
            Asked 2022-Feb-28 at 08:52

            I'm trying to build a doughnut chart with rounded edges only on one side. My problem is that I have both sided rounded and not just on the one side. Also can't figure out how to do more foreground arcs not just one.

            ...

            ANSWER

            Answered 2022-Feb-28 at 08:52

            The documentation states, that the corner radius is applied to both ends of the arc. Additionally, you want the arcs to overlap, which is also not the case.

            You can add the one-sided rounded corners the following way:

            1. Use arcs arc with no corner radius for the data.
            2. Add additional path objects corner just for the rounded corner. These need to be shifted to the end of each arc.
            3. Since corner has rounded corners on both sides, add a clipPath that clips half of this arc. The clipPath contains a path for every corner. This is essential for arcs smaller than two times the length of the rounded corners.
            4. raise all elements of corner to the front and then sort them descending by index, so that they overlap the right way.

            Source https://stackoverflow.com/questions/71258718

            QUESTION

            Weekday from date in TEXT formula independent from used language in Excel
            Asked 2022-Feb-19 at 09:26
                        A         |       B       |
            ----------------------|---------------|--------------------------                    
            1      2022-02-14     |       Mo      |    B1 = TEXT(A1,"DDD")
            2                     |               |
            3                     |               |
            
            ...

            ANSWER

            Answered 2022-Feb-19 at 09:26

            The solution from JvdV in the comments solves the problem:

            Source https://stackoverflow.com/questions/71170048

            QUESTION

            Domain Driven Design - How do I model a Company and Employee use case?
            Asked 2022-Feb-12 at 06:14

            I've been digging into DDD for the first time the last few weeks. I'm developing an HR application and am really struggling with the idea of Aggregate Roots.

            So the current entities would be:

            • Company
            • Employee

            Now given the lifecycle of an Employee, it makes sense at first to include it as a child entity on Company. An Employee can be added to a Company (new hire or existing) and then that Employee could resign or be fired - at which point that Employee record would likely be updated with some kind of status, so it can be differentiated from active Employees.

            In regards to domain logic, every Employee at a Company must have a unique email. So if a Company always contained a list of all its Employees, I imagined that could be modeled as:

            company.AddEmployee(employee) - This method would contain logic that makes sure the email is unique. In addition, it would update the size property of the Company, based on how many Employees they have. (<100 is small, <500 is medium, etc)

            Now the biggest issue I have seen people discuss is concerning large Aggregates. I think this use case would fall under that concern, as a Company could have 10k+ Employees in this HR application. If I'm adding a single Employee at a time, it seems really wasteful to gather all 10k+, even if it's just their emails.

            Am I doing the right thing here by making the Company the Aggregate Root, or is there a better way?

            ...

            ANSWER

            Answered 2022-Feb-09 at 23:08

            You can keep Company as the aggregate root, but I'd use domain events to guard against duplicate emails.

            My approach would be along the following lines:

            Source https://stackoverflow.com/questions/71054957

            QUESTION

            Auto generate migrations alembic + SQLAlchemy imperative declaration
            Asked 2022-Feb-02 at 18:03

            I'm exploring a new DDD project using SQLAlchemy and Alembic for the first time. I'd like to use imperative mapping to isolate my domain objects. All the doc I can find about auto generating migrations with Alembic is using declarative mapping. Is it because I have to manually write all migrations if I want to use imperative mapping ?

            ...

            ANSWER

            Answered 2022-Feb-02 at 18:03

            I had to import the metada of the Table I manually defined

            Source https://stackoverflow.com/questions/70922312

            QUESTION

            How to get rows of Pandas Dataframe where the column value starts with any of given characters
            Asked 2022-Jan-30 at 17:21

            I have the following Pandas Dataframe:

            ...

            ANSWER

            Answered 2022-Jan-30 at 16:59

            QUESTION

            Typescript Module augmentation is not working: Property 'main' does not exist on type 'PaletteColorOptions'
            Asked 2022-Jan-18 at 02:50

            I have been working on Material-UI and trying to use a color system throughout the palette. There seems to be some issue while compilation although it works perfectly in run time. Can someone help me resolve following error:

            Error:

            Property 'main' does not exist on type 'PaletteColorOptions'.
            Property 'main' does not exist on type 'Partial'.(2339)

            Here is stackblitz as well: https://stackblitz.com/edit/react-up6bjl-hx1bbh?file=demo.tsx

            Code:

            ...

            ANSWER

            Answered 2022-Jan-18 at 02:50

            The TypeScript error is unrelated to your module augmentation. The issue is just that defaultColors is of type PaletteOptions. PaletteOptions defines primary to be of type PaletteColorOptions.

            Here's the definition of PaletteColorOptions and the types it is built from:

            Source https://stackoverflow.com/questions/68844584

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install ddd

            Install the @node-ts/ddd package and its dependencies:.

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