Bitcoin.org | Report problems or help improve | Blockchain library

I am building a simple cryptocurrency app with coinmarketcap api. my get request is inside of componentDidMount. When I console.log the received object inside of the async function and inside the render - it works. But When I actually trying to display the received data inside of return (h3 element), the received object becomes undefined. I get a typeError "cannot read property urls of undefined". What am I doing wrong here?

I have trouble to find specific object with preg_match_all pattern. I have a text. But I would like to find just one specific

Like I have a string of text

I have trouble to find specific object with preg_match_all pattern. I have a text. But I would like to find just one specific

Like I have a string of text

I was looking at nice timeline script and wanted to use, i made several change to css as per my design but I was wondering if i could change the color of active year from gray to red when page is being scrolled,

I looked at the code and found that when page is scrolled no class is changed to relect sticky behaviour of the active year.

I am using Beautifulsoup4 in order to scrape info in github. However, whenever I try to get the data inside a table the program just returns table tags of opening and close.

How can I create AnswerInlineQuery with URL? I can't find any more details for that query, all sample code is about Telegram SDK, I need to code like this (URL post, not class)

I tried this:

I am trying to access single elements within an object and I keep getting an error.

Here is my React Component:

I ran into this error when trying to run tests in CoinControllerTest, from what I can tell coinMarketClient is a bean. The application runs and everything appears to work, it's only the tests that fail.

Any advice appreciated

To my understanding the merkle-tree can be used to separate the actual transactions (or other content) of a block and its validation process, by recursively applying hash functions to the blocks content.

This makes it possible to implement simplified payment validation (or the validation of any other data within a block).

The linked definition states that SVP is a

[...] method for verifying if particular transactions are included in a block without downloading the entire block.

If the merkle tree is a method to check if a specific transaction was part of a block, this implies that we do not "trust the block" and are thus checking if the hash of the searched transaction is part of the tree. If we do not trust the block (or the original validator of the block) how come we trust the merkle tree, which could also be faked (or could it not?).

Are we "just" relying on the fact that has values are pseudo random and that it would be hard to create a fake tree with the same root-value, but one different node value?

Thanks!