Calculate a SHA1 hash of an object. The main difference with
digest(x, algo = "sha1")
is that sha1()
will give the same hash on
32-bit and 64-bit systems. Note that the results depends on the setting of
digits
and zapsmall
when handling floating point numbers. The
current defaults keep digits
and zapsmall
as large as possible
while maintaining the same hash on 32 bit and 64 bit systems.
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for integer
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for numeric
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for character
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for factor
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for complex
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for Date
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for NULL
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for logical
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for matrix
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for data.frame
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for array
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for list
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for pairlist
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for name
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for POSIXlt
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for POSIXct
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for anova
sha1(x, digits = 4, zapsmall = 7, ..., algo = "sha1")
# S3 method for function
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for call
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
# S3 method for raw
sha1(x, digits = 14, zapsmall = 7, ..., algo = "sha1")
the object to calculate the SHA1
the approximate number of significant digits in base 10. Will
be converted to a base 16 equivalent. Defaults to digits = 14
, expect for
sha1.anova where digits = 4
the approximate negative magnitude of the smallest relevant
digit. Will be converted to a base 2 equivalent. Values smaller than this
number are equivalent to 0. Defaults to zapsmall = 7
Ignored in most methods. See Details for usage
The hashing algoritm to be used by digest
. Defaults to
"sha1"
Extra arguments:
environment: An optional extra argument for sha1.function
. Should
be TRUE, FALSE or missing. sha1.function
will ignore the enviroment of
the function only when environment = FALSE
.