Given a list of lines, select those whose lengths are equal to a variable, equal to the length of a selector line, or between the lengths of two selector
lines.
Use a function which iterates through the target lines. For each target line, if it has the desired length, the function reports it and puts it in a new
list of result lines.
... more on Design Patterns CA
SeleLengthOfLine Manipulations
SeleLengthOfLine Manipulations