ad4f267b7a
search.cpan.org is shutting down. It will redirect to metacpan.org after June 25, 2018. With hat: perl
18 lines
1 KiB
Text
18 lines
1 KiB
Text
The Digest::TransformPath module implements the TransformPath concept.
|
|
A TransformPath is a complex higher-order key that is designed for use
|
|
with chains of functions that sequentially transform a piece of data.
|
|
|
|
The concept starts with a sizable chunk of data, for example an image,
|
|
for which we can determine a unique identifier, and for which we can
|
|
cheaply determine if and when the source material has changed. A series
|
|
of resource-intensive transforms might be applied to this original data
|
|
to produce another piece of data. In the image example, we might auto-level,
|
|
crop, scale, rotate, colour-balance and then thumbnail the image. This
|
|
transformed data would be put into a cache. If at some future point
|
|
we wish to obtain the same image, but would preferably like to use the
|
|
cached version, we would have to take the original image, reapply the
|
|
transforms, and then compare to the result the first time around.
|
|
|
|
Further documentation is found within the module.
|
|
|
|
WWW: https://metacpan.org/release/Digest-TransformPath
|