Different between ./ , ../ , ../../ , ~/ on file path(URL) in asp.net

These path components are shortcuts with specific meanings: . means the current path level (so if you’re on index.aspx and you reference ./style.css then the latter would have to be in the same folder as the former) .. means one path level up (so if you’re on /somefolder/index.aspx and you reference ../style.css then the latter would have to be in the parent folder of someFolder) / means the root … Read more

What does ‘&’ do in a C++ declaration?

The “&” denotes a reference instead of a pointer to an object (In your case a constant reference). The advantage of having a function such as over is that in the former case you are guaranteed that myname is non-null, since C++ does not allow NULL references. Since you are passing by reference, the object … Read more

Please run `npm cache clean`

As of npm@5, the npm cache self-heals from corruption issues and data extracted from the cache is guaranteed to be valid. If you want to make sure everything is consistent, use npm cache verify instead. On the other hand, if you’re debugging an issue with the installer, you can use npm install –cache /tmp/empty-cache to use a temporary cache instead … Read more

HTML 5: Is it
,
, or
?

Simply <br> is sufficient. The other forms are there for compatibility with XHTML; to make it possible to write the same code as XHTML, and have it also work as HTML. Some systems that generate HTML may be based on XML generators, and thus do not have the ability to output just a bare <br> tag; if you’re using … Read more

what is gitpod: what does it actually do?

Gitpod co-founder here. Gitpod = server-side-dev-envs + dev-env-as-code + prebuilds + IDE + collaboration. From a Git Repository on GitHub, Gitlab or Bitbucket, Gitpod can spin up a server-side-dev-environment for you in seconds. That’s a docker container that you can fully customize and that includes your source code, git-Terminal, VS Code extensions, your IDE (Theia … Read more