readObject

readObject(handle)

handle is the handle of the object to read.

Can read all data structures including scalar, vector, matrix, set, dictionary and table to the handle. It must be executed by a logged-in user.

a1=10.5
a2=1..10
a3=cross(*,1..5,1..10)
a4=set(`IBM`MSFT`GOOG`YHOO)
a5=dict(a4.keys(),125.6 53.2 702.3 39.7)
a6=table(1 2 3 as id, `Jenny`Tom`Jack as name)
a7=(1 2 3, "hello world!", 25.6)

fout=file("test.bin","w")
fout.writeObject(a1)
fout.writeObject(a2)
fout.writeObject(a3)
fout.writeObject(a4)
fout.writeObject(a5)
fout.writeObject(a6)
fout.writeObject(a7)
fout.close();

The script above writes 7 different types of objects to a file. The script below reads out those 7 objects from the file and prints out a short description of the objects.

fin = file("test.bin")
for(i in 0:7) print typestr fin.readObject()
fin.close();
// output
 DOUBLE
 FAST INT VECTOR
 INT MATRIX
 STRING SET
 STRING->DOUBLE Dictionary
 TABLE
 ANY VECTOR