crust | C/C to Rust transpiler | Transpiler library

I couldn't find a proper topic for this question as I haven't got a proper error message.

I'm trying to create a management system for a restaurant which mainly provides pizza as well as other foods(pasta, wings, etc). I want this system to be used by the staff. I have created an abstract class named Foods that can be used to inherit by other foods. So far I have created a class that inherits from Foods named Pizza. Below are my code.

PS: I have used namespaces for organize foods and staff members separately. As far as I know some people doesn't recommend namespace and my apologies if you're one of them.

interfaces.h

code piece from book

I am reading getopt() funtion from a book and trying to make a program that takes command line arguments. But what is the purpose of adding optind to argv, and how to add an integer to pointer array? Full code:

Having an issue where I can't get the alert to display after clicking the button. I've edited the code from what it previously was according to the suggestions made and still not getting the alert to display. Any other thoughts on what the issue could be? I appreciate and thank you all for the help.

Have tried a variety of things but nothing is quite working...

I have the following code:

first-time poster/ new to coding, working with Python3, Tkinter, and Pickle.

For a project I'm working on I have designed a random meal generator that uses user input ingredients and determines what meals are available to be cooked. Everything is functional with the exception of being able to save and open the ingredient dictionary.

Basically what I want is for a user to be able to save their ingredients and open that file using filedialog.

Here is a sample code of what I have written for saving the recipe list:

I'm having an issue with my bot changing an unexpected page. For example, I have a sample application where you order a pizza. It goes like this:

1. "I want to order a pizza."
2. Pick your toppings
3. Pick your type of crust
4. Speak any special requests (light on the cheese, etc.)

I want to make sure that when the user is on a specific page that it won't jump back to a different page. If it asks me what type of crust I want on my pizza, and I say "pepperoni," it should trigger a "no match," but instead it jumps back to #2, assuming that I am picking my toppings. It shouldn't go back; the topping has already been chosen. With Dialogflow ES I could prevent this from happening by marking the intent with a specific context, but I don't know how to prevent that from happening in Dialogflow CX.

How do I keep the bot on the right path without the user being able to jump around the flow by saying something unexpected? Any help is appreciated.

I copied the following code form the Auxiliary Class Constructors article, pasted into Scastie, changed class to trait and set the Scala version to 3.1.0:

I have a snippet dataset of chemical elements shown below

I want to create a new field called "abundance_rank", where a rank of 1 refers to the highest abundant value (Referring to 'Abundance in Earth's crust' column)

For example, (symbol, abundance_in_earth_crust) with rows (A, 100), (B, 100), (C, 100), (D, 50), the expected records of (symbol, abundance_in_earth_crust, abundance_rank) will be (A, 100, 1), (B, 100, 1), (C, 100, 1), (D, 50, 4). Note that the abundance_rank of D is 4.

I created a new field abundance_rank with the code below

I want 4 histograms on the x axis; one for each Site with bins for each group of individuals. The groups are ; "mol","an","crust" and "other". the y axis would be the mean abundance. the data frame can be called DF.

ggplot(DF, aes(fill=?, y=?, x=Site)) + geom_bar(position="dodge", stat="identity")

I am lost in want to put in sections fill= and y=, I have been doing it seperetly with vectors and it worked but would like to group all. DF$Site differs from another "Site" I have been using for my simpler histograms: Site <- c(rep("1" , 1) , rep("2" , 1) , rep("3", 1) , rep("4" , 1), rep("5" , 1) )

And I would "fill" with: fill = rep("whatever",5)

for my means I would creat a vector and plug into y= like so: mol = c(1,0,0,4,12.66666667) I would also use the mean vector with a standard deviation vector for the error bars:

sdmol = c(0.471404521,0,0,5.656854249,16.51934892)

+geom_errorbar( aes(x=Site, ymin=mol-sdmol, ymax= mol+sdmol), width=0.4, colour="orange", alpha=0.9, size=1)+theme(text=element_text(size=20))

I can regroup all my data if it helps. Thank you!