On Sat, Oct 15, 2016 at 5:52 PM, Justin Israel wrote:

> On Sun, 16 Oct 2016, 8:17 AM Tong Sun wrote:
>> Hi,
>> Need help again.
>> I got everything tested out correctly, in https://github.com/suntong/
>> lang/blob/master/lang/Go/src/ds/PersistentData-GOB.go, but when I tried
>> to apply it to my real case (more complicated data structure), it doesn't
>> work any more. I've put my code at,
>> http://gopkg.in/suntong/deduper.v1
>> i.e., https://github.com/suntong/deduper/tree/v1.2
>> Here is the relevant piece:
>>  mh := minhash.New(cfg.bands, cfg.rows, cfg.shingles)
>>  persistName := "mh.gob"
>>  RestoreState(persistName, mh)
>>  defer SaveState(persistName, mh)
>> The same code works well in https://github.com/suntong/
>> lang/blob/master/lang/Go/src/ds/PersistentData-GOB.go, but in
>> my deduper.v1, after the program is run, that "defer SaveState" should
>> have saved something, but the mh.gob is still an empty file:
>> $ ls -l mh.gob
>> -rw-rw---- 1 tong tong *22* 2016-10-15 15:13 mh.gob
>> What might be the cause?
>> How to fix it?
> You don't seem to check for errors in your restore and save calls. How do
> you know that your save is actually working?

That's a good point, still not the true cause -- checking them will be a
good practice, but will not solve the problem here, because the exact same
code works in
I've verify from the code and result that the save *is* actually working.

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