bitcoin | A simple Bitcoin price index app | Cryptocurrency library

The approach would be simple. We take each key of json object and we replace its digit part with empty string then copy the data of old key to new key and delete the old key.

You need to do things slightly different when you're defining a struct, and when you're instantiating a struct.

When you write:

this seem to work

I believe you could achieve this very easily using string slicing:

There are two issues here.

First, what you're passing to the function isn't what it's expecting. &message has type char (*)[4096], i.e. a pointer to an array of size 4096 of char. The function meanwhile is expecting a char *[4096], i.e. an array of size 4096 of char *. This is a type mismatch.

The second is that on this line:

There are some bridge applications that allow you to perform cross-chain operations (mostly run by exchanges). But these are operated on a different layer, unrelated to smart contracts.

What you're asking is not possible if you want to stick strictly to smart contracts.

However, you can use the oracle pattern. Create an off-chain app (the oracle) that listens to transactions from your contract to a specific address. Each transaction (from your contract to the target address) will trigger an action in the off-chain app - e.g. reading Bitcoin data. The oracle then sends another transaction to your smart contract, passing it the off-chain data.

You have to increase the delay after clicking the next_page.click() before content = driver.page_source.encode('utf-8').strip() to make the page load a next page data.
It's not recommended to use hardcoded sleep.
Some better way to do it would to get data presented on the previous page and then use some kind of expected conditions to wait until the previous data no more presented.

First you need to wait until the element is presented on the page, then scroll to it and then click on it.
I tried to do it as following:

In Python you can assign functions to variables.

fout.write is a function, so in this example, D is assigned to that function.

D = fout.write

In this line D ('hash: %s\n' % (hexify (dhash (self.render())),)), you are calling the function D, that is, fout.write. It would be the same as:

fout.write('hash: %s\n' % (hexify (dhash (self.render())),))