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docs: update deprecated io.ReadFile with os.ReadFile #481

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docs: update deprecated io.ReadFile with os.ReadFile #481

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7 changes: 3 additions & 4 deletions use-cases/attachments-with-mailer-helper.md
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,6 @@ import (
"log"
"os"
"encoding/base64"
"io/ioutil"
"github.com/sendgrid/sendgrid-go"
"github.com/sendgrid/sendgrid-go/helpers/mail"
)
Expand All @@ -34,7 +33,7 @@ func main() {

// read/attach .txt file
a_txt := mail.NewAttachment()
dat, err := io.ReadFile("testing.txt")
dat, err := os.ReadFile("testing.txt")
if err != nil {
fmt.Println(err)
}
Expand All @@ -46,7 +45,7 @@ func main() {

// read/attach .pdf file
a_pdf := mail.NewAttachment()
dat, err = io.ReadFile("testing.pdf")
dat, err = os.ReadFile("testing.pdf")
if err != nil {
fmt.Println(err)
}
Expand All @@ -58,7 +57,7 @@ func main() {

// read/attach inline .jpg file
a_jpg := mail.NewAttachment()
dat, err = io.ReadFile("testing.jpg")
dat, err = os.ReadFile("testing.jpg")
if err != nil {
fmt.Println(err)
}
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