shorthand | shorthand微信公众号开源，基于Node.js和Vue | Runtime Evironment library

I have some pretty complicated objects. They contain member variables of other objects. I understand the beauty of copy constructors cascading such that the default copy constructor can often work. But, the situation that may most often break the default copy constructor (the object contains some member variables which are pointers to its other member variables) still applies to a lot of what I've built. Here's an example of one of my objects, its constructor, and the copy constructor I've written:

I'm creating an R Markdown document using the 'papaja' package and the 'apa7' LaTeX template. When used together, the latter package and template currently produce a conflict due to duplicated \author and \affiliation fields in the tex file. Earlier, a method was found to resolve this conflict that worked by adding the following LaTeX commands to the preamble (through header-includes in the YAML header):

I've updated angular cli and created a new project, with routing and scss.

When I run npm install i see:

Problem: Given a binary search tree in which the keys are numbers, we'll define the operation 'cumsum' ( shorthand for cumulative sum ) that switches the key of every node in the tree with the sum of all the keys that are smaller or equal to it.
For example,

In this example,
The key 5 in the root is switched to the value 10: the sum of the original key in the root ( which is 5 ) and all smaller keys than it ( which are 2 and 3 ).
The key 3 is switched with the value 5: sum of the original key in this node ( meaning, 3 ) and all the smaller keys than it ( which is 2 ).
The key 12 in the rightmost node is switched with the value 45: sum of the original key in this node ( meaning, 12 ) and all the smaller keys than it ( which are 2,3,5,6,8 and 9 ).

Note that the method needs to be an envelope function that envelopes a recursive function. Also note that the method cumsum does not return a new tree but rather updates the tree itself ( in-place )

My attempt:

Is there a shorthand for the match expression with isVertical here?

I looked for some similar problems but I couldn't find anything except this: https://github.com/spf13/cobra/issues/1025

My problem is about inserting some string which contains a dash at the beginning like the following example,

Consider the example of a typed decorator bound to certain classes.

What is the simplest, most readable and straightforward way to raise an illegal instruction in RISC-V on purpose?

I know that per spec any "full zero" instruction (so 32/16 bits only zeros) is a "Defined Illegal Instruction" (section 12.5, user spec). But I have no idea if there exists an asm shorthand for that (at least I could not find any) that I could then use in inline asm in C code.

There must surely be a portable and reliable way to always cause an illegal instruction exception? I personally find writing to read-only registers or similar hacks quite offputting, as they are not very explicit. But maybe this is just how its done?

Thank you in advance

Is it possible to have a CSS slider cycle through two images when animating them with the translateX transform property?

I'm facing a couple of issues:

1. I can't seem to get the second image to show even though it is in the HTML unless I use position: absolute and then the overflow: hidden doesn't work on the parent?

2. How do I reset the first image to go back to the beginning to start it all again?

Note: in the animation shorthand, the animation lasts for 2.5s and there is an initial delay of 3s.

I only want to do with this with the translateX property because I want the 60FPS smoothness (it will be done with translate3d when completed, but to make the code easier to read I've used translateX). I don't wish to animate margin: left or the left property etc.

Any help would be amazing.

Code is below or link to Codepen: https://codepen.io/anna_paul/pen/ZEJrvRp