Can anybody explain what std.io.Reader.read function does?

[viral ledge]

The buffer is the true output

You copy the data to your buffer, it returns how much it actually read

[lament vine]

ohh i think i get it now when i use the reader function on a File from std.io.getStdIn it gives back a Reader and the context is the File's context

[viral ledge]

yea

And the the read functions makes a read and puts it into your buffer and returns how much you actually read

[lament vine]

where is the buffer located in exactly?

[viral ledge]

Yours to choose

[lament vine]

i am guessing the readFn function is located somewhere else in the library depending on what i am reading from

[viral ledge]

writer and reader are interfaces

the readFn function is defined into the context

for example, File has a read function which is the readFn for the File Reader

[lament vine]

I understand

then it calls os.read for os-specific calls?

[viral ledge]

It will do what the context wants to do

for File yeah

I think is implemented around os.read