From: Hung Dao Date: 2006-12-07T04:54:40+09:00 Subject: Re: Difference between nil? vs. (variable != nil)... ------=_Part_31198_30112436.1165434873442 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 Content-Disposition: inline SWYgeW91IHB1dCB0aG9zZSBzb3VyY2UgaW4gYSBsb29wLCBzb3VyY2UgQiBhbHdheXMgcmV0dXJu ICIiIGlmCnByb2R1Y3RfY292ZXJhZ2UuZXh0ZXJuYWxfZGVzY3JpcHRpb24gPT0gbmlsIHdoaWxl IHNvdXJjZSBBIGRvZXMgbm90LgpCYXNpY2FsbHkgdGhvc2Ugc291cmNlcyBkbyBkaWZmZXJlbnQg am9iIC4KCk9uIDEyLzYvMDYsIE1hcnRpbiBEZU1lbGxvIDxtYXJ0aW5kZW1lbGxvQGdtYWlsLmNv bT4gd3JvdGU6Cj4KPiBPbiAxMi82LzA2LCBKYXNvbiAgVm9nZWwgPGphc29udm9nZWxAZ21haWwu Y29tPiB3cm90ZToKPiA+IFNvdXJjZSBBIDoKPiA+Cj4gPiBpZiAoQHByb2R1Y3RfY292ZXJhZ2Vz ICE9IG5pbCAmJiBAcHJvZHVjdF9jb3ZlcmFnZXMubGVuZ3RoID4gMCkKPiA+ICAgICAgIEBwcm9k dWN0X2NvdmVyYWdlcyA9IEBwcm9kdWN0X2NvdmVyYWdlcy5lYWNoIGRvCj4gPiB8cHJvZHVjdF9j b3ZlcmFnZXwKPiA+ICAgICAgICAgcHJvZHVjdF9jb3ZlcmFnZS5leHRlcm5hbF9kZXNjcmlwdGlv biA9Cj4gPiBDb3ZlcmFnZS5maW5kKHByb2R1Y3RfY292ZXJhZ2UuY292ZXJhZ2VfaWQpLmV4dGVy bmFsX2Rlc2NyaXB0aW9uICMgdGVzdAo+ID4gICAgICAgICBpZiAocHJvZHVjdF9jb3ZlcmFnZS5l eHRlcm5hbF9kZXNjcmlwdGlvbiAhPSBuaWwpCj4gPiAgICAgICAgICAgcHJvZHVjdF9jb3ZlcmFn ZS5leHRlcm5hbF9kZXNjcmlwdGlvbi5jYXBpdGFsaXplIQo+ID4gICAgICAgICBlbmQKPiA+ICAg ICAgIGVuZAo+ID4gICAgIGVuZAo+ID4KPiA+IFNvdXJjZSBCIDoKPiA+Cj4gPiBpZiAoQHByb2R1 Y3RfY292ZXJhZ2VzICE9IG5pbCAmJiBAcHJvZHVjdF9jb3ZlcmFnZXMubGVuZ3RoID4gMCkKPiA+ ICAgICAgIEBwcm9kdWN0X2NvdmVyYWdlcyA9IEBwcm9kdWN0X2NvdmVyYWdlcy5lYWNoIGRvCj4g PiB8cHJvZHVjdF9jb3ZlcmFnZXwKPiA+ICAgICAgICAgcHJvZHVjdF9jb3ZlcmFnZS5leHRlcm5h bF9kZXNjcmlwdGlvbiA9Cj4gPiBDb3ZlcmFnZS5maW5kKHByb2R1Y3RfY292ZXJhZ2UuY292ZXJh Z2VfaWQpLmV4dGVybmFsX2Rlc2NyaXB0aW9uICMgdGVzdAo+ID4gICAgICAgICByZXR1cm4gIiIg aWYgcHJvZHVjdF9jb3ZlcmFnZS5leHRlcm5hbF9kZXNjcmlwdGlvbi5uaWw/Cj4gPiAgICAgICAg IHByb2R1Y3RfY292ZXJhZ2UuZXh0ZXJuYWxfZGVzY3JpcHRpb24uY2FwaXRhbGl6ZSEKPiA+ICAg ICAgIGVuZAo+ID4gICAgIGVuZAo+ID4KPiA+IEkgd2FudGVkIHRvIHVzZSBTb3VyY2UgQiwgYnV0 IGl0IHJldHVybiAiIiBldmVyeXRpbWUuICBCdXQgU291cmNlIEEKPiA+IHdvcmtzLiAgSSBleHBl Y3RlZCBib3RoIG9mIHRoZW0gdG8gd29yay4KPgo+IFB1dCBpbiBhIHRlc3QgcHJpbnQsIHRvIHNl ZSB3aGF0IG5pbD8gaXMgcmV0dXJuaW5nLiBJdCBpcyBwb3NzaWJsZSBmb3IKPiBhIGNsYXNzIHRv IG92ZXJyaWRlIG5pbD8sIHRob3VnaCBpdCdzIGhhcmQgdG8gdGhpbmsgb2Ygd2h5IG9uZSB3b3Vs ZC4KPgo+IG1hcnRpbgo+Cj4KCgotLSAKQ2jhu4kgY8OzIGzDvSB0csOtIGPhu6dhIGLhuqNuIHRo w6JuIG3hu5tpIHNvaSBzw6FuZyDEkcaw4bujYyBz4buxIHRo4bqtdC4iQ8OhaSDEkeG6uXAgxJHh ur0gbmjhuqV0IG3DoApjaMO6bmcgdGEgY8OzIHRo4buDIHRy4bqjaSBuZ2hp4buHbSDEkcaw4buj YyBsw6AgY8OhaSBiw60g4bqpbi4gxJDDsyBsw6AgY+G6o20gdGjhu6ljIG7hu4FuIHThuqNuZyB0 cm9uZwpjw6FpIG7DtGkgY+G7p2Egbmdo4buHIHRodeG6rXQgdsOgIGtob2EgaOG7jWMgY2jDom4g Y2jDrW5oLiBL4bq7IG7DoG8ga2jDtG5nIGJp4bq/dCDEkeG6v24gbsOzLApraMO0bmcgY8OybiBr aOG6oyBuxINuZyBuZ+G6oWMgbmhpw6puIGhheSBraW5oIG5n4bqhYywga+G6uyDEkcOzIGNvaSBu aMawIMSRw6MgY2jhur90LCDEkcOjIHThuq90CnLhu6VpIGzhu61hIHPhu5FuZyB0cm9uZyBt4bqv dCBtw6xuaCIiRGFzIFNjaMO2bnN0ZSwgd2FzIHdpciBlcmxlYmVuIGvDtm5uZW4sIGlzdCBkYXMK R2VoZWltbmlzdm9sbGUuIEVzIGlzdCBkYXMgR3J1bmRnZWbDvGhsLCBkYXMgYW4gZGVyIFdpZWdl IHZvbiB3YWhyZXIgS3Vuc3QKdW5kIFdpc3NlbnNjaGFmdCBzdGVodC4gV2VyIGVzIG5pY2h0IGtl bm50IHVuZCBzaWNoIG5pY2h0IG1laHIgd3VuZGVybiwKbmljaHQgbWVociBzdGF1bmVuIGthbm4s IGRlciBpc3Qgc296dXNhZ2VuIHRvdCB1bmQgc2VpbiBBdWdlIGVybG9zY2hlbi4iIlRoZQpmYWly ZXN0IHRoaW5nIHdlIGNhbiBleHBlcmllbmNlIGlzIHRoZSBteXN0ZXJpb3VzLiBJdCBpcyB0aGUg ZnVuZGFtZW50YWwKZW1vdGlvbiB3aGljaCBzdGFuZHMgYXQgdGhlIGNyYWRsZSBvZiB0cnVlIGFy dCBhbmQgdHJ1ZSBzY2llbmNlLiBIZSB3aG8Ka25vd3MgaXQgbm90IGFuZCBjYW4gbm8gbG9uZ2Vy IHdvbmRlciwgbm8gbG9uZ2VyIGZlZWwgYW1hemVtZW50LCBpcyBhcyBnb29kCmFzIGRlYWQsIGhp cyBleWVsaWdodCBoYXMgYmVlbiBleHRpbmN0LiIK ------=_Part_31198_30112436.1165434873442--