Golang encoding/csv: Difference between revisions
From wikinotes
Tag: Reverted |
Tag: Reverted |
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XML is generally not homogenous.<br> | XML is generally not homogenous.<br> | ||
Record each possible sub-element as a field on your object.<br> | Record each possible sub-element as a field on your object.<br> | ||
If an element can occur multiple times, declare it as an array. | If an element can occur multiple times, declare it as an array.<br> | ||
You can ignore elements by not defining fields for them. | |||
<syntaxhighlight lang="go"> | <syntaxhighlight lang="go"> | ||
encoded := ` | encoded := ` |
Revision as of 02:46, 26 June 2022
Go's builtin module for encoding/decoding csv files.
NOTE:
go's builtin csv module does not conform to the normal encoding interface.
Serializing
data := [][]string{ {"1", "2", "3"}, {"4", "5", "6"}, } writer := new(strings.Builder) csvWriter := csv.NewWriter(writer) csvWriter.WriteAll(data) fmt.Println(writer.String()) // 1,2,3 // 4,5,6
Deserializing
data := `1,2,3 4,5,6` reader := csv.NewReader(strings.NewReader(data)) records, _ := reader.ReadAll() fmt.Println(records[0][1]) // 2XML is generally not homogenous.
Record each possible sub-element as a field on your object.
If an element can occur multiple times, declare it as an array.
You can ignore elements by not defining fields for them.encoded := ` <mediawiki> <siteinfo> abc </siteinfo> <page> <title>Main Page</title> </page> <page> <title>Linux</title> </page> </mediawiki> ` type Result struct { XMLName xml.Name `xml:"mediawiki"` // root node SiteInfo string `xml:"siteinfo"` // only one 'siteinfo' element under 'mediawiki' Page []Page `xml:"page"` // multiple 'page' elements under 'mediawiki' } type Page struct { Title string `xml:"title"` } var result Result xml.Unmarshall([]byte(encoded), &result) fmt.Println(result.Page[0].Title.Text) // Linux