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Mastering Development

C++ / same code produces slower performance

I wrote a function to parse a list of integers in order to remove all values in a given interval [u,u+15]. Calls to this function represent 60% of my execution time, so I tried to optimize it. The list is limited to 30 elements and it is unique so I choose a static array where […]

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Mastering Development

Create new variable with list’s objects names in r

I have a named list of data frames. I need to create a new variable for each data frame with the name of the data frame so I can eventually rbind them all to make the statistics and plots. I know lapply doesn’t pass the object’s name and that there are plenty of posts with […]

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Mastering Development

Why do I see duplicate Sorting buttons on my WebGrid?

I can see two sorting icons displayed superimposing one another, on each header. Can someone please tell me, why I see them and how to remove them. This WebGrid is in a Partial view and I have defined the DataTable in the partial view too with the same below given definition here is my datatable […]

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Mastering Development

Plots from different packages side by side in Python

I know how to create matplotlib plots side by side, using plt.subplots() and the axes variable . But I cannot find how to do this when the plotting functions come from different python packages, let’s say seaborn and scipy.stats. Can anyone help? import seaborn as sns from scipy import stats train = [1,2,2,3,3,3,4,4,4,5,6]*2 #Distribution from […]

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Mastering Development

Create 2 subdivs of child Div and add Dynamic unique ID on Appended Child Divs?

I am currently building a blackjack game and each time I press “hit”, I run this function which appends divs that represents a card pulled from a deck. I am able to set a ID to the div, but I want each ID to increment in value… So div1, div2, div3. Currently, each div gets […]

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Mastering Development

Evaluating Specific Numbers Within a 2D Array

I’m trying to get any 2D array, and then evaluating numbers in a 2×2 square and seeing which one is the highest number. I keep getting an ArrayIndexOutOfBoundsException: 4. I mapped out how the code would execute but I don’t see how I am getting out of the bounds of the array. Anyone see the […]

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Mastering Development

Find intersection of dictionary values list

I have two dictionaries with the same keys, while the values are variant: a = {1: [1, 2, 3, 4, 5], 2: [6, 7, 8], 3: [1, 3, 5, 7, 9]} b = {1: [2, 3, 4, 7], 2: [6, 7], 3: [1, 3, 15, 10]} I’m trying to get the intersection under the same […]

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Mastering Development

Adding Data from predict() values to end of another plot in R

I have a csv file that estimates the population from 2010-2019. I’ve used the predict() to estimate the population from 2020 to 2024. How would I combine these two plots to where 2020 starts where 2019 left off on the x- axis? Would the function ggarrange be the best option? Also, how would I change […]

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Mastering Development

Find unique elements in numpy array based on another array

I have two numpy arrays for which I’d like to find the number of unique entries in x separated by the uniqueness array u. For instance the following two arrays would return a uniqueness score of 19. x = [1, 2, 1, 0, 3, 1, 2, 2, 4, 0, 0, 1, 3, 3, 2, 1, […]

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Mastering Development

Can you define Const variables for any Class?

While declaring const the following observation is not understood: const abc=[3,4,5,6] Here we are declaring abc as const means we are fixing pointer to point to a object. Does this mean that we cannot change list members through abc i.e abc[0]=5 or we cannot assign it a new list abc=[5,6,7] If a create a class […]