Lesson 3: Fund Me

[propeltrain]

What is the meaning and use of += between [msg.sender] and msg.value?

Timestamp: 2.29.46 minutes.

[Nlferu]

Hello @propeltrain

y += x is equal to y = y + x

so in your case it will be:

addressToAmountFunded[msg.sender] += msg.value

//will be equal to

addressToAmountFunded[msg.sender] = addressToAmountFunded[msg.sender] + msg.value

Let me know if it is clear enough for you :)

[cromewar]

Nice answer @Neftyr!!

[propeltrain]

Thank you so much :). It’s clear now. @Neftyr @cromewar