Returns an absolute pathname string. Relative paths are prefixed with the user’s home directory.

Returns true if pathname represents an absolute path.

Returns the filename component (without directory) of f.

Single-element String array used as varargs placeholder for Paths/get.

Returns true if the file exists.

Returns the file extension (without the dot) of f, or nil if none.

Coerces fname to a java.io.File. Returns nil when fname is nil.

Lists all directories the exist in Java classpath as a sequence of strings. Returns nil if there are none.

Returns the value of the Java system property named s, or nil.

For the given pathnames creates a pathname expressed as a string by prefixing them with user’s home directory obtained from the Java property user.dir with all parts joined using current path name separator.

Applies parse-java-properties to each element of vector v, returning a new vector. Returns v unchanged when it is falsy.

Replaces all ${property.name} placeholders in string s with their Java system property values.

Resolves a single ${...} placeholder string to its Java system property value.

For the given Java property name and optional path names creates a path name expressed as a string by prefixing them with the directory obtained from a property with all parts joined using pathname separator.

Regex matching ${property.name} placeholders in strings.

Read first n lines from a file. If the pathname is relative it will be relative to user’s home directory.

Reads the given preferences file. If the path is relative it will be relative to user’s home directory.

Returns true if pathname represents a relative path.

Returns true if a classpath resource named r exists.

Returns a java.io.File object for the existing resource of the given name.

For the given pathnames creates a pathname expressed as a string which resides within one of the Java resource directories. The path must exist to be returned.

For the given pathnames creates a pathname expressed as a string by prefixing them with user’s directory (typically a project directory) obtained from the Java property user.dir with all parts joined using current path name separator.

Executes the given function op and passes it a key or a sequence given as k and additional, optional arguments. Before that happens it will get all identifiers from the sequence (or check if the given single k is an identifier) and try to load their namespaces if the identifier(s) is/are fully qualified.

Writes the given preference file. If the path is relative it will be relative to user’s home directory.