about the src codes

Started by zhuangjifengover 22 years ago1 messagesgeneral
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#1zhuangjifeng
zhuangjifeng@263.net

<html><pre><PRE>i find i have some difficulties to understand this structure.can you help me?Thank you!</PRE><PRE>struct _DestReceiver<BR>{<BR>&nbsp;/* Called for each tuple to be output: */<BR>&nbsp;void&nbsp;&nbsp;(*receiveTuple) (HeapTuple tuple, TupleDesc typeinfo&nbsp;&nbsp;DestReceiver *self);// is it a function or others??<BR>&nbsp;/* Initialization and teardown: */<BR>&nbsp;void&nbsp;&nbsp;(*setup) (DestReceiver *self, TupleDesc typeinfo);<BR>&nbsp;void&nbsp;&nbsp;(*cleanup) (DestReceiver *self);<BR>&nbsp;/* Private fields might appear beyond this point... */<BR>};</PRE></pre></html>

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