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杞澆涓涓嬪惂錛?br>[鍘熷湴鍧]http://wanwan722.blogspot.com/2008/10/podplain-old-data-and-nonpod.html
鐪嬫浉鐨勬檪鍊欙紝涓鐩寸湅鍒? POD" 閫欏嬮棞閸靛瓧錛屽彲鑳芥槸鎴戝緸渚嗘矑鏈夊ソ濂芥妸涓鏈珻++鐨勬浉鐪嬪畬鍚?閭勬槸鐪肩潧鑷嫊蹇界暐 orz)錛屽緦渚嗕笂綞叉煡浜?jiǎn)涓涓嬶紝鍦ㄩ欓倞鍒嗕韓涓涓嬪ソ浜?.
POD 鏄疨lain Old Data鐨勭啊瀵紝鏄寚涓浜涚郴緄辯殑int, char, float銆佹寚妯欍乤rray涔嬮鐨勮硣鏂欏瀷鍒ワ紝閫欐噳瑭茶牷濂芥兂鍍忕殑錛屽氨鏄疌++ compiler鎻愪緵鐨勫収寤哄瀷鍒ワ紝姣旇純鐗瑰垾鐨勬槸欏炲垾鑸囩祼妲嬶紝濡傛灉欏炲垾鍜岀祼妲嬪付鏈?a >trivial constructor錛屼篃鏄疨OD鐨勪竴紼?br>
class vector3D
{
float x, y, z;
} ;
struct size
{
int width, height;
} ;
Non-POD鐣剁劧灝辨槸POD鐨勭浉鍙嶅泬錛屽彲鑳芥槸寰堣闆滅殑欏炲垾鎴栫祼妲嬨?br>
鐢熷懡閫辨湡:
1. POD: 鍜屽嚭鐝懼湪璦樻喍楂旂殑鏅傞枔涓妯?br>2. Non-POD: 闁嬪鍦╟onstructor錛岀祼鏉熷湪destructor
鎵浠OD鍜孨on-POD鏄湁宸垾鐨勶紝鍥犳涓浜沵emcpy, memcmp絳塁 function涓嶉仼鍚堢敤鍦∟on-POD鐨勭墿浠朵笂(娌掓湁constrctor/destructor)錛屽鏋滀綘鐪熺殑浣跨敤鐨勮┍錛屽彲鑳芥渻閫犳垚鍤撮噸鐨勯尟瑾ゃ?br>
Reference:
http://www.informit.com/guides/content.aspx?g=cplusplus&seqNum=32
Comment:
trivial constructor: 鑷嫊琚法璀櫒鍔犲叆鐨勯爯璦緩妲嬪瓙銆?
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