check_cols()
Check Cols
check_count()
Checks Count
check_data1()
Check Data1
check_data2()
Check Data2
check_data3()
Check Data3
check_data_frame()
Check Data Frame
check_date()
Checks Date
check_flag()
Checks Flag
check_int()
Checks Int
check_join()
Check Join
check_key()
Check Key
check_length()
Check Length
check_null()
Check NULL
check_number()
Checks Number
check_rows()
Check Rows
check_scalar()
Check Scalar
check_string()
Checks String
check_time()
Checks Time
check_unique()
Check Unique
check_values()
Check Values
check_vector()
Check Vector
checkor()
Multiple Checks
max_integer()
Maximum Integer Value
max_nrow()
Maximum Number of Rows
min_integer()
Minimum Integer Value