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JSON serialization of Google App Engine models

... There is a small mistake in the code: Where you have "output[key] = to_dict(model)" it should be: "output[key] = to_dict(value)". Besides that it's perfect. Thanks! – arikfr Nov 7 '09 at 22:02 ...
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How can I export the schema of a database in PostgreSQL?

... only the schema to stdout as .sql. For windows, you'll probably want to call pg_dump.exe. I don't have access to a Windows machine but I'm pretty sure from memory that's the command. See if the help works for you too. shar...
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The server principal is not able to access the database under the current security context in SQL Se

...u would after restoring a db). A stock (cursor driven) script to re-sync all accounts is attached: USE <your database> GO -------- Reset SQL user account guids --------------------- DECLARE @UserName nvarchar(255) DECLARE orphanuser_cur cursor for SELECT UserName = su.name F...
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How do you determine the ideal buffer size when using FileInputStream?

...as well. This is why you see most buffers sized as a power of 2, and generally larger than (or equal to) the disk block size. This means that one of your stream reads could result in multiple disk block reads - but those reads will always use a full block - no wasted reads. Now, this is offset qu...
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Best way to encode text data for XML in Java?

... Very simply: use an XML library. That way it will actually be right instead of requiring detailed knowledge of bits of the XML spec. share | improve this answer | ...
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Check if a row exists, otherwise insert

...cedure that updates a row in a table. If the row doesn't exist, insert it. All this steps wrapped by a transaction. 11 Ans...
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Using @property versus getters and setters

... Prefer properties. It's what they're there for. The reason is that all attributes are public in Python. Starting names with an underscore or two is just a warning that the given attribute is an implementation detail that may not stay the same in future versions of the code. It doesn't preven...
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Why does volatile exist?

...ed 16 bit value as a semaphore to know when the other guy was done. Essentially we did this: void waitForSemaphore() { volatile uint16_t* semPtr = WELL_KNOWN_SEM_ADDR;/*well known address to my semaphore*/ while ((*semPtr) != IS_OK_FOR_ME_TO_PROCEED); } Without volatile, the optimizer sees ...
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What is SQL injection? [duplicate]

...sult of queries, reading data or even changing data that they shouldn't be allowed to do. Example in PHP: $password = $_POST['password']; $id = $_POST['id']; $sql = "UPDATE Accounts SET PASSWORD = '$password' WHERE account_id = $id"; Now suppose the attacker sets the POST request parameters to "...
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Renew Provisioning Profile

...appears). I think because I had the phone plugged in already it automagically updated to the phone, because I didn't have to re-sync or anything. Now my App works again! share | improve this answ...