Initializing help system before first use

x_validate_length

Purpose
Validates that all non-NULL input vectors hold at least n elements
Synopsis
x_validate_length(n, ...)
Arguments
n 
an integer length
... 
an arbitrary list of vectors, some of which may be NULL
Return value
logical: TRUE if all input vectors have length() at least n
Example 

x_validate_length(3, 1:2, 1:3)
# FALSE
x_validate_length(2, 1:2, 1:3)
# TRUE
x_validate_length(2, 1:2, 1:3, 1:4, 1:5)
# TRUE
x_validate_length(4, 1:8, 1:3, 1:4, 1:5)
# FALSE
x_validate_length(4, 1:8, NULL, 1:4, 1:5)
# TRUE

Parent Topic R interface reference manual

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