Load a library mutedly and quit (die) in case of failing

The specified library is loaded mutedly by suppressing all messages. If the library is not found, or its version under the specification of minVer, the R session dies with a message.

Usage

libordie(package, minVer, missing.quit.status = 1, ver.quit.status = 1)

Arguments

package

One package name (can be character or non-quoted symbol (see examples)

minVer

Optional, character string, the minimum working version

missing.quit.status

Integer, the status of quitting when the package was not found

ver.quit.status

Integer, the status of quitting when the package was found, but older than the minimum working version

Value

NULL if success, otherwise the session will be killed.

Details

Only one package should be tested once.

See also

The function calls qqmsg internally to kill the session

Author

Jitao David Zhang <jitao_david.zhang@roche.com>

Examples

libordie(stats)
libordie("methods")
libordie(base, minVer="2.15-1")