pkgmaker: packages – R documentation

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packages

Loading Packages

require.quiet silently requires a package, and qrequire is an alias to require.quiet.

require.quiet(...)

qrequire(...)

qlibrary(...)

mrequire(msg, package, lib.loc = NULL, quietly = FALSE)

`...`	extra arguments passed to `library` or `require`.
`msg`	error message to use, to which is appended the string `' requires package <pkg>'` to build the error message.
`package`	name of the package to load.
`lib.loc`	a character vector describing the location of R library trees to search through, or `NULL`. The default value of `NULL` corresponds to all libraries currently known to `.libPaths()`. Non-existent library trees are silently ignored.
`quietly`	a logical. If `TRUE`, no message confirming package attaching is printed, and most often, no errors/warnings are printed if package attaching fails.

qlibrary: silently loads a package.
mrequire: tries loading a package with base require and stops with a – custom – error message if it fails to do so.

mrequire('Running this example', 'stringr')
try( mrequire('Doing impossible things', 'notapackage') )

Development Utilities for R Packages

v0.32.2

GPL (>= 2)

Authors

Renaud Gaujoux [aut, cre]

Initial release

2020-10-20