Slice chunking in Go
<p>I have a slice with ~2.1 million log strings in it, and I would like to create a slice of slices with the strings being as evenly distributed as possible.</p>

<p>Here is what I have so far:</p>

<pre><code>// logs is a slice with ~2.1 million strings in it.
var divided = make([][]string, 0)
NumCPU := runtime.NumCPU()
ChunkSize := len(logs) / NumCPU
for i := 0; i &lt; NumCPU; i++ {
    temp := make([]string, 0)
    idx := i * ChunkSize
    end := i * ChunkSize + ChunkSize
    for x := range logs[idx:end] {
        temp = append(temp, logs[x])
    }
    if i == NumCPU {
        for x := range logs[idx:] {
            temp = append(temp, logs[x])
        }
    }
    divided = append(divided, temp)
}
</code></pre>

<p>The <code>idx := i * ChunkSize</code> will give me the current "chunk start" for the <code>logs</code> index, and <code>end := i * ChunkSize + ChunkSize</code> will give me the "chunk end", or the end of the range of that chunk. I couldn't find any documentation or examples on how to chunk/split a slice or iterate over a limited range in Go, so this is what I came up with. However, it only copies the first chunk multiple times, so it doesn't work.</p>

<p>How do I (as evenly as possible) chunk an slice in Go?</p>