Questions about hashcode
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What is the use of hashcode in Document Snapshot?
I noticed this code in the DocumentSnapshot class of firebase:
@Override
public int hashCode() {
int hash = firestore.hashCode();
hash = hash * 31 + key.hashCode();
hash = hash * 31 + (doc...
Sambhav Khandelwal
Votes: 0
Answers: 1
Lombok @EqualsAndHashcode
I am implementing Lombok @EqualsAndHashcode annotation. I need to control order of parameters included in hashCode() generation. For example Lombok generates this:
public int hashCode() {
final in...
Farrukh Nabiyev
Votes: 0
Answers: 0
why does Guava's Sets::hashCodeImpl have a weird loop update with double complement?
Guava computes the hash code of a set like this:
static int hashCodeImpl(Set<?> s) {
int hashCode = 0;
for(Iterator var2 = s.iterator(); var2.hasNext(); hashCode = ~(~hashCode)) {
...
Just Me
Votes: 0
Answers: 1
Compute the hashcodes of multiple different integer arrays, when appending several numbers at the end of each array, the hashcodes are all the same
For example, giving two arrays below:
int[] array1={80,103,142,91,160,250,7,7,7,7};
int[] array2={130,105,209,7,7,7,7};
except {7,7,7,7}, the numbers in the array are some random numbers which between...
longpeng1899
Votes: 0
Answers: 0