Returns an enumeration over lines of an input channel, as read by the input_line function.

Returns an enumeration over characters of an input channel.

Returns the list of lines read from an input channel.

Return the whole contents of an input channel as a single string.

Print a boolean to stdout.

Print a boolean to stderr.

returns the data of a given filename.

creates a filename, write text into it and close it.

creates a string from a char.

the identity function.

returns an unique identifier every time it is called.

represent a runtime value as a string. Since types are lost at compile time, the representation might not match your type. For example, None will be printed 0 since they share the same runtime representation.

print the representation of a runtime value on stdout. See remarks for dump.

finally fend f x calls f x and then fend() even if f x raised an exception.