What’s up today? (Part 1)

Sorry to hear that. Hopefully there will be upcoming relief.

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I’ll survive, I overpaid thanks to trading profits on the last bull run so home is safe, I feel for those not as fortunate though.

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Mouse No 1: “Are You Going to get Vaccinated”,

Mouse No. 2: Are You Crazy, They Haven’t finished the Tests on Humans”

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But in 2013, he said, he accidentally threw out a hard drive that contains 7,500 bitcoins.

“I had two identical hard drives and I threw out the wrong one,” Howells said. “I know I’m not the only person who has ever thrown out the wrong thing, but it usually doesn’t cost people over £200 million.”

He said that he has to “laugh about it now” because there’s nothing else he can do.

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Why the world needs a no fee fast transaction anon (cash) crypto.

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Looks interesting.

Somewhat related to maidsafe team:

The landlords and bankers won’t like this though. It makes it harder for them to play the game of monopoly.

The history of Monopoly can be traced back to 1903,[1] when American anti-monopolist Lizzie Magie created a game which she hoped would explain the single tax theory of Henry George. It was intended as an educational tool to illustrate the negative aspects of concentrating land in private monopolies.

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For us any UK based worker, remote or not (they all are) are employees. We have had some thoughts about making all non employees, i.e. remote workers out of country more aligned but have not got there yet. The balance is the contractors freedoms to take breaks and holiday pay constraining breaks. We are close to where we want to be (collective decision making) but we need to keep watching and probing to make sure we are all “equal”. Right now I feel we are, but these things can change.

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That XOR Trick

March 15, 2020

There are a whole bunch of popular interview questions that can be solved in one of two ways: Either using common data structures and algorithms in a sensible manner, or by using some properties of XOR in a seemingly hard to understand way.

While it seems unreasonable to expect the XOR solutions in interviews, it is quite fun to figure out how they work. As it turns out, they are all based on the same fundamental trick, which we will derive in a bottom-up way in this post. Afterwards we will look at a bunch of applications of that XOR trick ™, such as solving this popular interview question:

You are given an array of n - 1 integers which are in the range between 1 and n. All numbers appear exactly once, except one number, which is missing. Find this missing number.

Of course, there are a number of straightforward ways to solve this problem, but there is also a perhaps surprising one using XOR.

XOR

XOR is a logical operator that works on bits. Let’s denote it by ^ . If the two bits it takes as input are the same, the result is 0 , otherwise it is 1 . This implements an exclusive or operation, i.e. exactly one argument has to be 1 for the final result to be 1 . We can show this using a truth table:

x y x ^ y
0 0 0
0 1 1
1 0 1
1 1 0

Most programming languages implement ^ as a bitwise operator, meaning XOR is individually applied to each bit in a string of bits (e.g. a byte).

For example:

0011 ^ 0101 = 0110

since

0 ^ 0 = 0
0 ^ 1 = 1
1 ^ 0 = 1
1 ^ 1 = 0

Because of this, we can apply XOR to anything, not just booleans.

Deducing Some Useful Properties…

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A ex-CFTC official on how Biden’s rumored pick to head the SEC might treat crypto-related issues. Could be good.

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I think that providing only one half of the contract with relief, in this case the renter, is not equal treatment under the law. I think they’ll use this do drive down property prices and then they will buy the properties from the middle class for pennies on the dollar.

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It will be nice when they can browse safe:// links too! :slight_smile:

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That’s what I’m concerned about. But an opportunity I suppose. The unfortunate truth is in most cases there is a loser on the other side of a good deal or win…

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[sarc] Absolutely. That’s why I buy crypto … so I can support muh terror-ism! Nothing to do with the fact that fiat is sh*t-paper. [/sarc]

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Interesting … but like most of the decentralized web, finding anything is a huge pain in the arse. So now we can use ipfs:// … great … give me a list of ipfs addresses from a decentralized search engine … does it exist? If so how do I integrate that with the browser?

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I think what she said is being somewhat misunderstood if not deliberately misinterpreted for sensationalist “journalism” I am using that word very reluctantly.