investments | Helps you with managing your investments | Business library

I am getting the error

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I'm trying to map trough my context in React but it won't render anything. (No error messages either). My app is wrapped with the context provider.

My context

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I want to get a list of values updated whenever its value is changed through a hook setState function, however I am getting an error I don't know why... I am getting a .map is not a function TypeError

Down bellow is my code and I also have a codesandbox link: https://codesandbox.io/s/fervent-satoshi-zjbpg?file=/src/Incomes.js:23-1551

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I want to get the useParams value, however I am getting an undefined value... I don't know why since I am using the params id in path='/investment/:id'

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I want to get the investments variable within the scope of another component...

I have written the code down-bellow which is ok, but how can I get this const investment since I already exported the function InvestmentsList? How can that be done without resorting to useSelector() from react-redux?

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This question is a spin-off from my previous post.

I have a big data frame (900k rows) about mergers and acquisitions (M&As).

The df has four columns: date (when the M&A was completed), target_nation (a company of which country was merged/acquired), acquiror_nation (corporation of which country was the acquiror), and big_corp (whether the acquiror was a big corporation or not, where TRUE means that corporation is big).

Here is a sample of my df:

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I have a big data frame (900k rows) about mergers and acquisitions (M&As).

The df has four columns: date (when the M&A was completed), target_nation (a company of which country was merged/acquired), acquiror_nation (corporation of which country was the acquiror), and big_corp (whether the acquiror was a big corporation or not, where TRUE means that corporation is big).

Here is a sample of my df:

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I'm following an online tutorial to learn how DAPP applications work and while my code matches the tutorial, I am receiving an error that they are not. I've been searching for several hours now and while I can find similar errors and that match mine, the solutions don't seem to work. I was hoping someone here might be able to take a look and see what could be causing the issue.

There are 2 buttons; one for deposit, and another for withdraw. For the onClick event of either, I am receiving this error in the console (I currently have the error piped to the console in a try/catch):

" Error, deposit: TypeError: Cannot read property 'methods' of null "

Is there anyone who might be able to help me shed some light on this? I have already tried reaching out to the host of the tutorial and commenting in the comment section, but I have not had a reply.

Here is the App.js code:

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I need help calculating IRR for different investments, and the IRR for those investments at different times.

So a have one dataframe that looks like this:

DATE Investment Flow 2012-05-12 1 -50 2013-09-04 1 100 2014-05-05 1 300 2013-09-04 2 -700 2015-05-12 2 1000 2012-04-04 3 100 2013-05-12 3 -50 2013-09-04 4 -60

And another one that looks like this

DATE Investment Stock 2012-09-05 1 400 2014-05-05 1 600 2014-05-05 2 300 2013-09-04 2 800 2012-09-14 3 1000 2013-09-05 4 6000

So I want to create multiple dataframes that contains the flow of each investment up until the date that I have information on the stock, with the last row containing the stock for that date. So for example, I have 2 observations on the stock for investment 1 so I should create 2 dataframes por investment 1 that look like this:

DATE Investment Flow + Stock(last row) 2012-05-12 1 -50 2012-09-05 1 400 DATE Investment Flow + Stock(last row) 2012-05-12 1 -50 2013-09-04 1 100 2014-05-05 1 300 2014-05-05 1 600

And for investment 3, give that I only have one observation on stock, there should only be 1 dataframe that look like this:

DATE Investment Flow + Stock(last row) 2012-04-04 3 100 2012-09-14 3 1000

Given that I have a lot of data, manually creating each dataframe is cumbersome, plus I would like this code to update the IRR when I have new information. I want to do this because I want to see the evolution of IRR for each date that I have information on the stock for each investment. Sort of like a time series of IRR for the investments. I will calculate the IRR with the dataframes created.

I have tried ranking the Dates for which I have information on stock, for each investment but have trouble with the loop.

Thank you very much

EDIT: Per request of Henry Ecker, this is a sample of the merged database.

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