Why must I have a parameterless constructor for Code First / Entity Framework
There must be a parameterless constructor, but it can be internal or private. ref question 3
Tarik
Moq does not contain a definition for ReturnAsync?
The generic argument being used does not match the arguments of the member being mocked. Remove the generic argument VeracrossMock .Setup(_ => _.GetStudentsAsync(1, null, CancellationToken.None)) .ReturnsAsync(resp); and the method will infer the desired generic arguments based on the member being mocked.
If condition possible in yaml file?
As a supplement to Vaibhav’s response: although yml does not inherently support if statements, some applications that use yml files for instructions may be able to parse if statements included in the yml. GitLab is one notable example. In GitLab’s CI/CD, the .gitlab-ci.yml file can be configured to include if statements such as: job: script: … Read more
How do you specify filenames within a zip when creating it on the command line from a pipe?
You can do this. ls | zip test.zip -@ this is done from the notion that i have 3 files in the dir. -rw-rw-r– 1 xxx domain users 6 Jan 7 11:41 test1.txt -rw-rw-r– 1 xxx domain users 6 Jan 7 11:41 test2.txt -rw-rw-r– 1 xxx domain users 6 Jan 7 11:41 test3.txt and the … Read more
How does `nullable=False` work in SQLAlchemy
The doc you reference explains the issue: This parameter is only used when issuing CREATE TABLE statements. If you originally created your database without nullable=False (or created it in some other way, separate from SQLAlchemy, without NOT NULL on that column), then your database column doesn’t have that constraint information. This information lives in reference … Read more
How can I allow Mixed contents (http with https) using content-security-policy meta tag?
You can’t. CSP is there to restrict content on your website, not to loosen browser restrictions. Secure https sites given users certain guarantees and it’s not really fair to then allow http content to be loaded over it (hence the mixed content warnings) and really not fair if you could hide these warnings without your … Read more
Merge two objects but only existing properties
Assuming you only want enumerable properties, this is easily done with Object.keys and in (or hasOwnProperty): Object.keys(obj2).forEach(function(key) { if (key in obj1) { // or obj1.hasOwnProperty(key) obj1[key] = obj2[key]; } }); Example: var obj1 = { “name”: “”, “age”: “” }; var obj2 = { “name”: “Leo”, “age”: “14”, “company”: “aero”, “shift”: “night” }; Object.keys(obj2).forEach(function(key) … Read more
What is the difference between removeLast() and popLast() methods of Array in Swift?
Those two methods are from AnyRandomAccessCollection which Array conforms to. popLast returns nil if the collection is empty. removeLast crashes if the collection is empty. It also has a discardable result.
How to conditionally inject service into component?
You can use the Injector import { Injector } from ‘@angular/core’ … constructor(private injector: Injector){ if(true) { this.oneService = <OneService>this.injector.get(OneService); } else { this.twoService = <TwoService>this.injector.get(TwoService); } } As @MeirionHughes mentioned this is called the service locator pattern: The technique is an example of the service locator pattern. Avoid this technique unless you genuinely need … Read more