Image.ping

Ping is similar to read except only enough of the image is read to determine the image columns, rows, and filesize. The columns, rows, and fileSize attributes are valid after invoking ping. The image data is not valid after calling ping.

  1. void ping(string filename)
  2. void ping(void[] blob)
    class Image
    void
    ping
    (
    void[] blob
    )

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