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