Solidity Bytes Comparison
Solidity Bytes Comparison
Loading saved threads...
farhankhwaja · External communityPost link
External question — Ethereum Stack Exchange
Author: farhankhwaja
Original post: https://ethereum.stackexchange.com/questions/32465
License: CC BY-SA 3.0 — https://creativecommons.org/licenses/by-sa/3.0/
Adaptation: HTML converted to plain text; contact email addresses removed.
I was going through the
Create Your Own CryptoCurrency
documentation and got stuck at the
proofOfWork
section. In this, they try to do a check i.e.
require(n >= bytes(difficulty)) //Check if its under difficulty
I wanted to understand, what kind of comparison is being done here?
Is is byte-to-byte comparison?
Is there some conversion happening before the check?
Or, its just a length check (which I think isn't the case, but just to be sure, I added it here).
If someone can point me to the right resource on the same.
Quote
Report
Adam Schindler · External communityPost link
External answer — Ethereum Stack Exchange
Author: Adam Schindler
Original post: https://ethereum.stackexchange.com/a/32468
License: CC BY-SA 3.0 — https://creativecommons.org/licenses/by-sa/3.0/
Adaptation: HTML converted to plain text; contact email addresses removed.
if n is greater then or equals to the number of bytes in the difficulty then it will be TRUE statement.
Bytes function in python explained:
Return a new “bytes” object, which is an immutable sequence of integers in the range 0 <= x < 256. bytes
ex:
var n = 16
var difficulty = 0x10
var bytes = bytes(difficulty) // 16
n >= bytes is true
Quote
Report
Post Reply
Quoted from Forex.com.bd-Editorial External question — Ethereum Stack Exchange Author: farhankhwaja Source score (net votes, not local likes): 1 Original post: https://ethereum.stackexchange.com/questions/32465 License: CC BY-SA 3.0 — https://creativecommons.org/licenses/by-sa/3.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I was going through the Create Your Own CryptoCurrency documentation and got stuck at the proofOfWork section. In this, they try to do a check i.e. require(n >= bytes(difficulty)) //Check if its under difficulty I wanted to understand, what kind of comparison is being done here? Is is byte-to-byte comparison? Is there some conversion happening before the check? Or, its just a length check (which I think isn't the case, but just to be sure, I added it here). If someone can point me to the right resource on the same.
Checking account access…