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Diffstat (limited to 'doc/string/sum.rdoc')
| -rw-r--r-- | doc/string/sum.rdoc | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/string/sum.rdoc b/doc/string/sum.rdoc index 5de24e6402..22045e5f4d 100644 --- a/doc/string/sum.rdoc +++ b/doc/string/sum.rdoc @@ -1,11 +1,12 @@ -Returns a basic +n+-bit checksum of the characters in +self+; +Returns a basic +n+-bit {checksum}[https://en.wikipedia.org/wiki/Checksum] of the characters in +self+; the checksum is the sum of the binary value of each byte in +self+, modulo <tt>2**n - 1</tt>: 'hello'.sum # => 532 'hello'.sum(4) # => 4 'hello'.sum(64) # => 532 - 'тест'.sum # => 1405 'こんにちは'.sum # => 2582 This is not a particularly strong checksum. + +Related: see {Querying}[rdoc-ref:String@Querying]. |