R: Loads data from file cache

readCacheHeader {R.cache} | R Documentation

## Loads data from file cache

### Description

Loads data from file cache, which is unique for an optional key object.

### Usage

    ## Default S3 method:
    readCacheHeader(file, ...)

### Arguments

`file` | A filename or a `connection`.
`...` | Not used.

### Value

Returns a named `list` structure with element `identifier`, `version`, `comment` (optional), `sources` (optional), and `timestamp`.

### Author(s)

Henrik Bengtsson

### See Also

`findCache`(). `loadCache`(). `saveCache`().

### Examples

    data <- 1:120
    key <- list(some=1, vari=2, ables=3)

    saveCache(key=key, data, comment="A simple example of a cached object.")

    header <- readCacheHeader(findCache(key=key))
    print(header)

    # Clean up
    file.remove(findCache(key=key))

[Package R.cache version 0.13.0 Index]