RE: readavailable()
I have recently encountered a problem with readavailable() myself. When I used the following, I noticed only a part of my file was read in:
f = open("myimg.png")
data = readavailable(f) #Only reads part of the file?!?
close(f)
On the other hand, if I simply used read(), the whole image was read in from disk:
f = open("myimg.png")
data = read(f) #This time, I get the whole file!
close(f)
So, maybe this is why there is a warning in the julia documentation:
You only get whatever your OS chooses to read (cache) into your buffer.
Possible limitation wrt Pipes?
I’m not 100% sure this statement applies to Pipe-s, though. They might react differently to the readavailable() command than IOBuffer-s do. In fact, I have observed they react differently in certain ways wrt their blocking behaviour - as mentioned in my previous post.