Reflection/List properties: Difference between revisions
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There may be a list of items, not just the lone <code>X</code> and these proceedings apply to READ statements also. |
There may be a list of items, not just the lone <code>X</code> and these proceedings apply to READ statements also. |
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=={{header|Go}}== |
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<lang Go>package main |
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import ( |
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"fmt" |
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"image" |
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"reflect" |
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) |
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// A type definition |
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type t struct { |
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X int |
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next *t |
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} |
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func main() { |
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report(t{}) |
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report(image.Point{}) |
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} |
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func report(x interface{}) { |
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t := reflect.TypeOf(x) |
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n := t.NumField() |
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fmt.Printf("Type %v has %d fields:\n", t, n) |
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fmt.Println("Name Type Exported") |
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for i := 0; i < n; i++ { |
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f := t.Field(i) |
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fmt.Printf("%-8s %-8v %-8t\n", |
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f.Name, |
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f.Type, |
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f.PkgPath == "", |
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) |
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} |
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fmt.Println() |
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}</lang> |
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{{out}} |
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<pre> |
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Type main.t has 2 fields: |
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Name Type Exported |
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X int true |
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next *main.t false |
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Type image.Point has 2 fields: |
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Name Type Exported |
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X int true |
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Y int true |
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</pre> |
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=={{header|Java}}== |
=={{header|Java}}== |
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