file=R/estimate_contrasts.R,line=108,col=5,[object_overwrite_linter] 'contrasts' is an exported object from package 'stats'. Avoid re-using such symbols.

file=R/estimate_contrasts.R,line=109,col=5,[object_overwrite_linter] 'contrasts' is an exported object from package 'stats'. Avoid re-using such symbols.

file=R/estimate_contrasts.R,line=110,col=5,[object_overwrite_linter] 'contrasts' is an exported object from package 'stats'. Avoid re-using such symbols.

file=R/estimate_contrasts.R,line=112,col=5,[object_overwrite_linter] 'contrasts' is an exported object from package 'stats'. Avoid re-using such symbols.

file=R/estimate_contrasts.R,line=116,col=5,[object_overwrite_linter] 'contrasts' is an exported object from package 'stats'. Avoid re-using such symbols.

file=R/estimate_contrasts.R,line=119,col=3,[object_overwrite_linter] 'contrasts' is an exported object from package 'stats'. Avoid re-using such symbols.

file=R/estimate_contrasts.R,line=136,col=3,[object_overwrite_linter] 'contrasts' is an exported object from package 'stats'. Avoid re-using such symbols.

file=R/estimate_means.R,line=64,col=50,[infix_spaces_linter] Put spaces around all infix operators.

file=R/estimate_means.R,line=112,col=11,[nzchar_linter] Use !nzchar(x) instead of x == "". Note that unlike nzchar(), EQ coerces to character, so you'll have to use as.character() if x is a factor. Whenever missing data is possible, please take care to use nzchar(., keepNA = TRUE); nzchar(NA) is TRUE by default.