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PersistentObjectException: detached entity passed to persist thrown by JPA and Hibernate
..." access types within the entity class otherwise the behavior is undefined by the JSR-317 specifications.
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Port 80 is being used by SYSTEM (PID 4), what is that?
... edited Sep 25 '16 at 11:19
Toby Allen
10.4k1010 gold badges6767 silver badges119119 bronze badges
answered Sep 15 '09 at 23:32
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NPM cannot install dependencies - Attempt to unlock something which hasn't been locked
... didn't change the permissions in ~/.npm/_locks for me. I got mine working by running sudo chown -R myname ~/.npm/_locks
– Sitati
Nov 30 '14 at 7:02
7
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How to use java.net.URLConnection to fire and handle HTTP requests?
...));
The query parameters must be in name=value format and be concatenated by &. You would normally also URL-encode the query parameters with the specified charset using URLEncoder#encode().
The String#format() is just for convenience. I prefer it when I would need the String concatenation opera...
What is the minimum valid JSON?
...ON interchange format used in this specification is exactly that described by RFC 4627 with two exceptions:
The top level JSONText production of the ECMAScript JSON grammar may consist of any JSONValue rather than being restricted to being a JSONObject or a JSONArray as specified by RFC 4627.
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Still Reachable Leak detected by Valgrind
...s invoked as a result of unloading a shared object. And all resources used by the shared object might be getting freed before it is unloaded. This could explain why the "still reachables" are getting freed in the munmap case. I'm just speculating here, though. There's not enough information here to ...
Select elements by attribute
...ature was specifically targeting checkboxes.
– fooledbyprimes
Aug 29 '12 at 14:48
6
The colon sel...
Algorithm to find top 10 search terms
...:
Manku, Motwani - "Approximate Frequency Counts over Data Streams" [pdf]
By the way, Motwani, of Stanford, (edit) was an author of the very important "Randomized Algorithms" book. The 11th chapter of this book deals with this problem. Edit: Sorry, bad reference, that particular chapter is on a dif...
Is there a way to cache GitHub credentials for pushing commits?
...er cache
... which tells Git to keep your password cached in memory for (by default) 15 minutes. You can set a longer timeout with:
git config --global credential.helper "cache --timeout=3600"
(That example was suggested in the GitHub help page for Linux.) You can also store your credentials pe...
Sqlite LIMIT / OFFSET query
...hat it supports both, recommending the second syntax to avoid confusion.
By the way, using LIMIT without first using ORDER BY may not always give you the results you intend. In practice, SQLite will return the rows in some order, probably determined by how they're physically stored in the file. ...