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Correct use of flush() in JPA/Hibernate
I was gathering information about the flush() method, but I'm not quite clear when to use it and how to use it correctly. From what I read, my understanding is that the contents of the persistence context will be synchronized with the database, i. e. issuing outstanding statements or refreshing enti...
Are there any side effects of returning from inside a using() statement?
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yes. using is simply syntactic sugar for a try/finally construct
– Mitch Wheat
Mar 3 '10 at 9:09
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INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
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In your table dbo.Sup_Item_Cat, it has a foreign key reference to another table. The way a FK works is it cannot have a value in that column that is not also in the primary key column of the referenced table.
If you have SQL Server Management Studio, open it up and...
What is an Endpoint?
...hat you send a request to in order to exchange an authorized Request Token for an Access Token which can then be used to obtain access to a Protected Resource.
Hope that helps clear things up. Have fun learning about OAuth! Post more questions if you run into any difficulties implementing an OAut...
Storing SHA1 hash values in MySQL
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I would use VARCHAR for variable length data, but not with fixed length data. Because a SHA-1 value is always 160 bit long, the VARCHAR would just waste an additional byte for the length of the fixed-length field.
And I also wouldn’t store th...
jQuery - multiple $(document).ready …?
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Remember seeing $(function() { // do stuff }); for the first time, and how difficult it was to Google the explanation? $(document).ready communicates so much more for so little...
– Matt Montag
Oct 15 '13 at 20:19
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Is it possible to append to innerHTML without destroying descendants' event listeners?
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Unfortunately, assignment to innerHTML causes the destruction of all child elements, even if you're trying to append. If you want to preserve child nodes (and their event handlers), you'll need to use DOM functions:
function ...
How do I resize a Google Map with JavaScript after it has loaded?
...p resizes to the whole screen as I expected but tiles start disappearing before the right hand edge of the page.
6 Answers
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Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...外，条件表达式中的与或非为分是：and, or, not关键字。
for 循环
从1加到100
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sum = 0
for i = 1, 100 do
sum = sum + i
end
从1到100的奇数和
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sum = 0
for ...
Disabling and enabling a html input button
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Do I need the attributes there for this to work? like disables="disable"
– k.ken
Dec 12 '12 at 2:21
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