Creates a JSON data stream and puts it inside filename, overwriting the file's current contents.
This operation is atomic, in the sense that the data is written to a temporary file which is then renamed to the given filename.
the path to the target file
true if saving was successful.
Creates a JSON data stream and puts it inside filename, overwriting the file's current contents.
This operation is atomic, in the sense that the data is written to a temporary file which is then renamed to the given filename.