blob: 41441b27ebadc373fbe93c37581fdec2ef43fe19 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
package dataset
import "iter"
type ClampedReader struct {
Reader
n int
}
func NewClampedReader(r Reader, n int) *ClampedReader {
return &ClampedReader{
Reader: r,
n: n,
}
}
func (c *ClampedReader) Num() (int, error) {
n, err := c.Reader.Num()
if err != nil {
return 0, err
}
return min(n, c.n), nil
}
func (c *ClampedReader) Texts() iter.Seq2[int, string] {
return func(yield func(int, string) bool) {
for n, d := range c.Reader.Texts() {
if n >= c.n {
return
}
if !yield(n, d) {
return
}
}
}
}
|
