Reimplementations of Functions Introduced Since R-3.0.0
Backport of trimws for R < 3.3.0
Backport of suppressWarnings and suppressMessages for R < 4.0.0
Backport of URLencode for R < 3.2.0
Backport of .valid.factor for R < 3.4.0
Backport of vignetteInfo for R < 3.6.0
Backport of warningCondition and errorCondition for R < 3.6.0
Backport of R_user_dir for R < 4.0.0
Backport of removeSource for R < 3.6.0
Backport of startsWith for R < 3.3.0
Backport of stopifnot for R versions < 4.0.0.
Backport of str2expression for R < 3.6.0
Backport of str2lang for R < 3.6.0
Backport of strrep for R < 3.3.0
Backport of anyNA for R versions < 3.2.0.
Backport of as.character.Rconcordance for R < 4.3.0
Backport of as.Rconcordance.default for R < 4.3.0
Backport of as.Rconcordance for R < 4.3.0
Backport of asplit for R < 3.6.0
Backport of hasName for R < 3.4.0
backports: Reimplementations of Functions Introduced Since R-3.0.0
Backport of capture.output for R < 3.3.0
Backport of deparse1 for R < 4.0.0
Backport of dir.exists for R < 3.2.0
Backport of ...elt for R < 3.4.2
Backport of ...length for R < 3.4.2
Backport of ...names for R < 4.1.0
Backport of dQuote and sQuote for R < 3.6.0
Backport of endsWith for R < 3.3.0
Backport of file.info for R < 3.2.0
Backports of wrappers around file.info for R < 3.2.0
Backport of get0 for R < 3.2.0
Import backported functions into your package
Backport of isFALSE for R < 3.4.2
Backport of isNamespaceLoaded for R < 3.2.0
Backport of isTRUE for R < 3.5.0
Backport of lengths for R < 3.2.0
Backport of .libPaths for R < 4.1.0
Backport of list2DF for R < 4.0.0
Backport of matchConcordance for R < 4.3.0
Backport of the null-coalescing operator for R < 4.4.0
Backport of paste for R < 4.0.1
Backport of paste0 for R < 4.0.1
Backport of print.Rconcordance for R < 4.3.0
Functions introduced or changed since R v3.0.0 are re-implemented in this package. The backports are conditionally exported in order to let R resolve the function name to either the implemented backport, or the respective base version, if available. Package developers can make use of new functions or arguments by selectively importing specific backports to support older installations.