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eachline

eachline(stream)

Create an iterable object that will yield each line from a stream.

Examples

Iterate over a file's contents

julia> fp = open("numbers.txt");
julia> iter = eachline(fp);
julia> for i in iter
            print(i)
        end
1
2
3
4
5
julia> close(fp)

julia> io = IOBuffer("Hello\nWorld\nJulia\n");
julia> lines = eachline(io);
julia> collect(lines)
3-element Array{String,1}:
 "Hello"
 "World"
 "Julia"

In the example above, we create an IOBuffer io containing several lines of text. We then use the eachline function to generate an iterable object lines that will yield each line from the stream. Finally, we collect all the lines using collect to obtain an array of strings representing each line from the stream.

It's important to note that eachline works with any type of stream, not just IOBuffer. You can use it with files, network streams, or any other stream-like object.

Here's an example with a file:

julia> file = open("data.txt", "r");
julia> lines = eachline(file);
julia> for line in lines
           println(line)
       end

In this example, we open a file named "data.txt" in read mode using the open function. We then create an iterable object lines using eachline to iterate over each line in the file. Finally, we loop over each line using a for loop and print it out.

It's worth mentioning that eachline does not include the trailing newline character in the yielded lines. If you need to include it, you can use the readline function instead.

See Also

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