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Checks if file or directory exists using
vld_string(x) && file.exists(x) && !dir.exists(x)
chk_file(x, x_name = NULL)vld_file(x)
vld_file(x)
The object to check.
A string of the name of object x or NULL.
The chk_ functions throw an informative error if the test fails.
chk_
The vld_ functions return a flag indicating whether the test was met.
vld_
vld_file: Validate File
vld_file
Other chk_files: chk_dir, chk_ext
chk_dir
chk_ext
# NOT RUN { # chk_file try(chk_file(tempfile())) # vld_file vld_file(tempfile()) # }
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