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Difference between Statement and PreparedStatement
The Prepared Statement is a slightly more powerful version of a Statement, and should always be at least as quick and easy to handle as a Statement.
The Prepared Statement may be parametrized
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Java how to replace 2 or more spaces with single space in string and delete leading and trailing spa
...);
See also
String.trim()
Returns a copy of the string, with leading and trailing whitespace omitted.
regular-expressions.info/Repetition
No trim() regex
It's also possible to do this with just one replaceAll, but this is much less readable than the trim() solution. Nonetheless, it's pro...
Hidden Features of MySQL
...t have only just recently started to use MySQL with my web applications, and I'm hungry for knowledge.
20 Answers
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What's so bad about Template Haskell?
... Tough luck, you'll only see that when actually using your code generator, and only under the circumstances that trigger the generation of that particular code. It is very difficult to unit test, too.
TH is also outright dangerous:
Code that runs at compile-time can do arbitrary IO, including la...
What are the benefits of learning Vim? [closed]
As a programmer I spend a lot of hours at the keyboard and I've been doing it for the last 12 years, more or less. If there's something I've never gotten used to during all this time, it's these annoying and almost unconscious constant micro-interruptions I experience while coding, due to some of th...
地图组件（高德地图） · App Inventor 2 中文网
...r drags it.
LongClick()
The LongClick event runs when the user presses and holds the 标记 and then releases it.
This event will only trigger if Draggable is 假 because it
uses the same gesture as StartDrag.
StartDrag()
The StartDrag event runs when the user presses and holds the 标记 ...
Why are there no ++ and -- operators in Python?
Why are there no ++ and -- operators in Python?
19 Answers
19
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Can you provide some examples of why it is hard to parse XML and HTML with a regex? [closed]
One mistake I see people making over and over again is trying to parse XML or HTML with a regex. Here are a few of the reasons parsing XML and HTML is hard:
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Metadata file '.dll' could not be found
I am working on a WPF, C# 3.0 project, and I get this error:
91 Answers
91
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commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated
Sometimes, when using <h:commandLink> , <h:commandButton> or <f:ajax> , the action , actionListener or listener method associated with the tag are simply not being invoked. Or, the bean properties are not updated with submitted UIInput values.
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