Question

After `x = x.y()`, why did `x` become `None` instead of being modified (possibly causing "AttributeError: 'NoneType' object has no attribute")?

score 610 · Answer 1 · 2023-03-27T00:18:30.593000

610

Views

After `x = x.y()`, why did `x` become `None` instead of being modified (possibly causing "AttributeError: 'NoneType' object has no attribute")?

Published on 27 March 2023 at 00:18

score 2.1k · Answer 2 · 2022-02-19T10:07:28.357000

2.1k

Views

Is there any rule in CQRS which doesn't allow to use a query and a command in the same controller action?

Published on 19 February 2022 at 10:07

score 499 · Answer 3 · 2021-08-11T15:38:20.937000

499

Views

CQS: Who is responsible for data caching and when?

Published on 11 August 2021 at 15:38

score 1k · Answer 4 · 2021-08-06T17:13:43.850000

1k

Views

Vertical Slice Architecture - What should go in the Controller, Command/Query, Response, CommandHandler?

Published on 06 August 2021 at 17:13

score 162 · Answer 5 · 2020-10-30T21:28:55.030000

162

Views

In CQ(R)S, is it OK to use a Command as a parameter of a model constructor?

Published on 30 October 2020 at 21:28

score 745 · Answer 6 · 2019-12-12T05:53:43.570000

745

Views

CQRS and unit of work - one command for all the changes, or many commands + a save command?

Published on 12 December 2019 at 05:53

score 1.1k · Answer 7 · 2019-12-05T11:21:36.577000

1.1k

Views

How to update read model in CQRS pattern on schema change of write model database?

Published on 05 December 2019 at 11:21

score 1.8k · Answer 8 · 2019-12-04T18:53:16.390000

1.8k

Views

How to generate read data in CQRS from existing write database?

Published on 04 December 2019 at 18:53

score 83 · Answer 9 · 2019-06-26T23:57:11.777000

83

Views

Command Query Separation - Asynchronous Commands that return values

Published on 26 June 2019 at 23:57

score 202 · Answer 10 · 2019-01-03T02:20:48.010000

202

Views

What are the recomendation for developing .net core 2.2 web api for following bulleted points?

Published on 03 January 2019 at 02:20

score 2.1k · Answer 11 · 2018-08-21T18:34:43.620000

2.1k

Views

Implementation of Event-Sourcing / CQRS approach in api-platform

Published on 21 August 2018 at 18:34

score 1k · Answer 12 · 2017-03-04T15:23:40.290000

1k

Views

Single function classes (named as verbs)

Published on 04 March 2017 at 15:23

score 1.3k · Answer 13 · 2016-12-12T09:03:18.920000

1.3k

Views

CQS and updating an existing entity

Published on 12 December 2016 at 09:03

score 41 · Answer 14 · 2016-11-06T17:09:15.040000

41

Views

Can not implicity convert type Systems.Collection.Generic.List<feedEventViewModel> to Proj.Areas.Management.Models.FeedEventViewModel

Published on 06 November 2016 at 17:09

score 28 · Answer 15 · 2016-09-19T19:46:34.243000

28

Views

Property seems to be changing between method calls, but no code is supposed to be changing it

Published on 19 September 2016 at 19:46

score 243 · Answer 16 · 2016-07-16T09:12:48.893000

243

Views

Confusion about interaction with other domains

Published on 16 July 2016 at 09:12

score 804 · Answer 17 · 2016-07-09T09:32:47.027000

804

Views

CQS pattern with Spring / Hibernate

Published on 09 July 2016 at 09:32

score 289 · Answer 18 · 2016-07-06T09:05:39.150000

289

Views

CQS with out parameter

Published on 06 July 2016 at 09:05

score 2.7k · Answer 19 · 2016-04-13T12:14:52.163000

2.7k

Views

Separate application service for command / query in CQRS implementation in Domain Driven Design?

Published on 13 April 2016 at 12:14

score 1k · Answer 20 · 2016-04-12T16:25:14.740000

1k

Views

Is running a query from a command a violation of Command-Query Separation?

Published on 12 April 2016 at 16:25

List Question

After `x = x.y()`, why did `x` become `None` instead of being modified (possibly causing "AttributeError: 'NoneType' object has no attribute")?

Is there any rule in CQRS which doesn't allow to use a query and a command in the same controller action?

CQS: Who is responsible for data caching and when?

Vertical Slice Architecture - What should go in the Controller, Command/Query, Response, CommandHandler?

In CQ(R)S, is it OK to use a Command as a parameter of a model constructor?

CQRS and unit of work - one command for all the changes, or many commands + a save command?

How to update read model in CQRS pattern on schema change of write model database?

How to generate read data in CQRS from existing write database?

Command Query Separation - Asynchronous Commands that return values

What are the recomendation for developing .net core 2.2 web api for following bulleted points?

Implementation of Event-Sourcing / CQRS approach in api-platform

Single function classes (named as verbs)

CQS and updating an existing entity

Can not implicity convert type Systems.Collection.Generic.List<feedEventViewModel> to Proj.Areas.Management.Models.FeedEventViewModel

Property seems to be changing between method calls, but no code is supposed to be changing it

Confusion about interaction with other domains

CQS pattern with Spring / Hibernate

CQS with out parameter

Separate application service for command / query in CQRS implementation in Domain Driven Design?

Is running a query from a command a violation of Command-Query Separation?

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