readLines

readLines(handle, [length=1024])

handle is the handle of the file to read.

length (optional) is the number of lines from the handle to read. The default number of lines to read is 1024.

Read a given number of lines from the handle. The function returns if the handle reaches the end or the given number of lines has been read.

timer(10){
x=rand(`IBM`MSFT`GOOG`YHOO`ORCL,10240)
eachRight(writeLine, file("test.txt","w"),x)
fin = file("test.txt")
do{
   y=fin.readLine()
} while(!y.isVoid())
fin.close()
};
// output
Time elapsed: 277.548 ms ms


timer(10){
x=rand(`IBM`MSFT`GOOG`YHOO`ORCL,10240)
file("test.txt","w").writeLines(x)
fin = file("test.txt")
do{
   y=fin.readLines(1024)
} while(y.size()==1024)
 fin.close()
};
// output
Time elapsed: 28.003 ms