Check existence and access rights of files
Check if an object contains missing values
Check if an argument is a count
Check that an argument is an atomic vector
Collect multiple assertions
Check if an object is an element of a given set
Check file system access rights
Convert an argument to an integer
Check if an object is an integerish vector
Check if an argument is a flag
Combine multiple checks into one assertion
Check the class membership of an argument
Check if an argument is a function
Check if an argument is a vector of type complex
Check if an argument is NULL
Check if an argument is a factor
Check if an argument is a vector of type logical
Check if an argument is a single atomic value
Coalesce operator
Check if an argument is an array
Turn a Check into a Test
Check if an argument is a single integerish value
Turn a Check into an Expectation
Fast and Versatile Argument Checks
Check if an object contains infinite values
Check if an argument is a data table
Re-export of qassert
Check if an argument is a vector
Check if an argument is a subset of a given set
Re-export of qtest
Check if a path is suited for creating an output file
Check that an argument is a vector of type numeric
Quick argument checks on (builtin) R types
Check if an object contains NaN values
Check for existence and access rights of directories
Check if an argument is a single numeric value
Check if an argument is vector of type integer
Check if an argument is a matrix
Check if an argument is equal to a given set
Check names to comply to specific rules
Check if an argument is a string
Check if an argument is a vector of type character
Check if an argument is named
Check if an argument is a data frame
Turn a Check into an Assertion
Check if an argument is an environment
Check if an argument is a list
Quick recursive arguments checks on lists and data frames
Check that an argument is an atomic vector
Check if an argument is a single missing value