Index of values

builds a JSON Array.

reads a JSON element as a JSON Array and returns an OCaml list, or raises a Json_error exception.

builds a JSON Bool

reads a JSON element as a bool or raises a Json_error exception.

describe x returns a short description of the given JSON data.

field tbl key looks for a unique field key in hash table tbl.

fieldx tbl key works like field tbl key, but returns Null if key is not found in the table.

builds a JSON Float

reads a JSON element as a float or raises a Json_error exception.

builds a JSON Int

reads a JSON element as an int or raises a Json_error exception.

tells whether the given JSON element is not null

tells whether the given JSON element is null

json_of_string s reads the given JSON string.

list f l maps OCaml list l to a JSON list using function f to convert the elements into JSON values.

list f x maps a JSON Array x to an OCaml list, converting each element of list x using f.

Same as Json_io.json_of_string but the argument is a file to read from.

make_table creates a hash table from the contents of a JSON Object.

The Null value

raises a Json_error exception if the given JSON value is not Null.

reads a JSON element as an int or a float and returns a float or raises a Json_error exception.

builds a JSON Object.

reads a JSON element as a JSON Object and returns an OCaml list, or raises a Json_error exception.

optfield tbl key queries hash table tbl for zero or one field key.

optfieldx is the same as optfield except that it will never return Some Null but None instead.

option x returns Null is x is None, or y if x is Some y.

option x returns None is x is Null and Some x otherwise.

optional f x returns Null if x is None, or f x otherwise.

optional f x maps x using the given function f and returns Some result, unless x is Null in which case it returns None.

Generic pretty-printing function.

This function is faster than the one provided by the Json_io.Compact submodule but it is less generic and is subject to the 16MB size limit of strings on 32-bit architectures.

Generic printing function without superfluous space.

save_json works like Json_io.string_of_json but saves the results directly into the file specified by the argument of type string.

builds a JSON String

reads a JSON element as a string or raises a Json_error exception.

string_of_json converts JSON data to a string.

type_mismatch expected x raises the Json_error msg exception, where msg is a message that describes the error as a type mismatch between the element x and what is expected.