File << Thing -- pirnt something to a file

File << Thing -- pirnt something to a file

Synopsis:

Operator: <<

Input:

an instance of class File.

an instance of class Thing.

Output:

an instance of class File.

f << x -- prints the expression x on the output file f.

Returns f as its value. Parsing associates leftward, so that several expressions may be displayed with something like f<<x<<y<<z. If f is a string, then a new file with name f is created, the expression x is printed into f, and the file f is closed.

i1 : x = 5



o1 = 5

i2 : << "the value of x is " << x << endl

the value of x is 5



o2 = stdio



o2 : File



  --  the standard input output file

See also:

Code:

     -- ../../../Macaulay2/m2/expressions.m2:1074
     File << Thing := File => (o,x) -> printString(o,net x)