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How to use from keyword : in ethers.js

In web3.js we will use from keyword as below, in the same way, how can we use from keyword in ether.js

web3.js ==>>aggregator.methods.withdraw( ).send({ from: this.state.account })

In the same, is this the way to use from keyword in ethers.js??

transfer(sender, reciever, {from:0x030403403})

What is the best algorithm for compressing a hash?

What is the best way to transform a hash with a longer length into one with a smaller length, preventing as many collisions as possible? (Hashing the hash) For example: Some versions of Git use SHA-1 for hashing commits. Of course, 15ce7ff90976b3e43738be403f5c985377646bb3 is rather large to display on a screen. Because of that, Github usually::Listen

What is the best way to transform a hash with a longer length into one with a smaller length, preventing as many collisions as possible? (Hashing the hash)

For example: Some versions of Git use SHA-1 for hashing commits. Of course, 15ce7ff90976b3e43738be403f5c985377646bb3 is rather large to display on a screen. Because of that, Github usually only shows the most significant 4 bytes (15ce7ff9) to refer to a specific commit.

But is this the best strategy or is there a better way? If SHA-256 was used instead of SHA-1, would the resulting “minified” hash be as secure and as colision-avoiding as possible within 4 bytes, regardless of the “minification” algorithm used?

How to use from keyword : in ethers.js

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