Method hash()


Method hash

int hash(string s)
int hash(string s, int max)

Description

Return an integer derived from the string s. The same string always hashes to the same value, also between processes, architectures, and Pike versions (see compatibility notes below, though).

If max is given, the result will be >= 0 and < max, otherwise the result will be >= 0 and <= 0x7fffffff.

Note

The hash algorithm was changed in Pike 7.5. If you want a hash that is compatible with Pike 7.4 and earlier, use 7.4::hash(). The difference only affects wide strings.

The hash algorithm was also changed in Pike 7.1. If you want a hash that is compatible with Pike 7.0 and earlier, use 7.0::hash().

Note

This hash function differs from the one provided by hash_value(), in that hash_value() returns a process specific value.

See also

hash_7_0(), 7.4::hash(), hash_value