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inkscape linux svg

  1. Open Inkscape.
  2. Choose "File - Import" to import a bitmap file.
  3. Choose to "embed" the image.
  4. Select the image with the select tool (↖).
  5. Select Path - Trace Bitmap... for settings (below shown for 2 colors = "Scans"):
    enter image description here
  6. Select "Update" for a preview until settings are fine.
  7. Start tracing with "OK".
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go url encoding

func  QueryUnescape func QueryUnescape (s string ) ( string , error ) QueryUnescape does the inverse transformation of QueryEscape, converting %AB into the byte 0xAB and '+' into ' ' (space). It returns an error if any % is not followed by two hexadecimal digits. func  QueryUnescape func QueryUnescape (s string ) ( string , error ) QueryUnescape does the inverse transformation of QueryEscape, converting %AB into the byte 0xAB and '+' into ' ' (space). It returns an error if any % is not followed by two hexadecimal digits.
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go golang get disk usage free space remain info

package main import ( "fmt" "syscall" ) func main() { fmt.Println(DiskUsage("./")) } func DiskUsage(path string) uint64 { fs := syscall.Statfs_t{} err := syscall.Statfs(path, &fs) if err != nil { return 0 } return fs.Bfree * uint64(fs.Bsize) } //All space   = fs.Blocks * uint64(fs.Bsize) //Free space = fs.Bfree * uint64(fs.Bsize) //Used space= fs.All - disk.Free
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