lib Update Request

Description

Function selectors can be used to initialize constants while error and event selectors (recently introduced in #12921) are rejected as non-constant. I think that all of them should work the same way in that regard.

Steps to Reproduce

contract C {
    event Ev();
    error Er();
    function f() external {}

    bytes4 constant functionSelector = this.f.se

I'm Writing a ThemeColor Plugin, use Visitor.

In fn:visitColor , node.parent sometimes is null (box-shadow:0 0 0 1px #999 inset). I can't find the parent Declaration Node of Color Node.
so I want to [less.js/lib/less/visitors/visitor.js Visitor.prototype.visit](https://github.com/less/less.js/blob/0e268598c8327b9e8d36d9bb2edfde95d8d787be/packages/less/src/less/visitors/visitor.js

I expected ? to not overwrite the query, but to merge. The docs of the proc use the word "concatenate" which implies that this is how the proc should work, but the implementation overwrites the query instead of concatenating.

Example

import uri
let foo = parseUri("https://google.com/?page=10")
echo(foo ? {"test": "42"})

Current Output

https://google.com/?t

See e.g. #2570. Some of the unit tests there with "wrong error message" should be somewhat easy to fix - just correct the error message we have to match CPython's. Others might be trickier, since you'll need to add diagnostics to recognize bad syntax and give a more detailed error than "unexpected token". Also, I think around half of them could be fixed just by adding "invalid syntax" in the messa

설명

퀵 정렬 게시글 중 bold 설정이 일부 들어가지 않았습니다.

링크

1. gyoogle - 퀵 정렬 (최악의 경우)
2. gyoogle - 퀵 정렬 (공간복잡도)

스크린샷

1. <img width="600" alt="image" src="https://user-images.githubusercontent.com/57972338/161484958-416f6d20-33df-412a-a5ca-c72f7

It will be very nice to have a read only line edit or text edit that is enabled but does not allow users to edit its content it only allows them to select text and copy it. Also currently there is no context menu shown when right clicking on a text edit.