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# CStruct Examples
require 'cstruct'
# example:
# struct Point in C\C++ (32-bit platform):
#
# struct Point
# {
# int x;
# int y;
# };
# struct Point in Ruby:
class Point < CStruct
int32:x
int32:y
end
# create a Point's instance
point = Point.new
# assign like as C language
point.x = 10
point.y = 20
puts "point.x = #{point.x},point.y = #{point.y}"
# struct PointF in C\C++ (32-bit platform):
#
# struct PointF
# {
# double x;
# double y;
# };
# struct PointF in Ruby:
class PointF < CStruct
double:x
double:y
end
# create a PointF's instance
# use 'block' to initialize the fields
point2 = PointF.new do |st|
st.x = 10.56
st.y = 20.78
end
puts "sizeof(PointF) = #{PointF.size}"
puts "point2.x = #{point2.x},point2.y = #{point2.y}"
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