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as.integer(1) (or rlang::int(1)) is the same as 1L but the latter is more concise and gets typed correctly at compilation.




The same applies to missing sentinels like NA -- typically, it is not necessary to specify the storage type of NA, but when it is, prefer using the typed version (e.g. NA_real_) instead of a coercion (like as.numeric(NA)).

See also

linters for a complete list of linters available in lintr.