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<div class="code"><pre><span class="c"># CStruct Examples</span>
require <span class="s"><span class="dl">'</span><span class="k">cstruct</span><span class="dl">'</span></span>
<span class="c"># struct Point in Ruby: </span>
<span class="r">class</span> <span class="cl">Point</span> < <span class="co">CStruct</span>
int32<span class="sy">:x</span>
int32<span class="sy">:y</span>
<span class="r">end</span>
<span class="c"># struct PointF in Ruby: </span>
<span class="r">class</span> <span class="cl">PointF</span> < <span class="co">CStruct</span>
double<span class="sy">:x</span>
double<span class="sy">:y</span>
<span class="r">end</span>
<span class="c"># write file</span>
<span class="co">File</span>.open(<span class="s"><span class="dl">"</span><span class="k">point.bin</span><span class="dl">"</span></span>,<span class="s"><span class="dl">"</span><span class="k">wb</span><span class="dl">"</span></span>)<span class="r">do</span> |f|
point = <span class="co">Point</span>.new {|st| st.x = <span class="i">100</span>; st.y =<span class="i">200</span> }
point_f = <span class="co">PointF</span>.new{|st| st.x = <span class="fl">20.65</span>; st.y =<span class="fl">70.86</span> }
f.write point.data
f.write point_f.data
<span class="r">end</span>
<span class="c">#read file</span>
<span class="co">File</span>.open(<span class="s"><span class="dl">"</span><span class="k">point.bin</span><span class="dl">"</span></span>,<span class="s"><span class="dl">"</span><span class="k">rb</span><span class="dl">"</span></span>)<span class="r">do</span> |f|
point = <span class="co">Point</span>.new
point_f = <span class="co">PointF</span>.new
point << f.read(<span class="co">Point</span>.size)
point_f << f.read(<span class="co">PointF</span>.size)
puts point.x
puts point.y
puts point_f.x
puts point_f.y
<span class="r">end</span></pre></div>
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