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Cross field validation with Hibernate Validator (JSR 303)
... fields; cross-field validation should be done at the class level. Additionally, the JSR-303 Section 2.2 preferred way to express multiple validations of the same type is via a list of annotations. This allows the error message to be specified per match.
For example, validating a common form:
@F...
How do you do a ‘Pause’ with PowerShell 2.0?
OK, I'm losing it. PowerShell is annoying me. I'd like a pause dialog to appear, and it won't.
5 Answers
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How to execute PHP code from the command line?
I would like to execute a single php statement like if(function_exists("my_func")) echo 'function exists'; directly with the command line without having to use a seperate php file.
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How do I specify the platform for MSBuild?
I am trying to use MSBuild to build a solution with a specified target platform (I need both binaries, x86 and x64). This is how I tried it:
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使用std::string作为std::map的key出错解决 - C/C++ - 清泛网 - 专注C/C++及内核技术
...0\vc\include\xstddef(180): error C2784: “bool std::operator <(const std::_Tree<_Traits> &,const std::_Tree<_Traits> &)”: 未能从“const std::string”为“const std::_Tree<_Traits> &”推导 模板 参数
1> c:\program files (x86)\microsoft visual studio 11.0\vc\include\xtree(2245...
Google Maps API v3: How do I dynamically change the marker icon?
Using Google Maps API v3, how do I programmatically change the marker icon?
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编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...
...这并不是应该由编译器该干的活。这行语句会变成对函数_CxxThrowException (函数来自MSVCR100.dll或其他类似版本的dll)的调用。 这个函数有编译器内部构建。你喜欢的话，你可以自己调用它。这个函数的第一个参数是指向抛出的异常...
What is the difference between Class and Klass in ruby?
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class is a keyword used to define a new class. Since it's a reserved keyword, you're not able to use it as a variable name. You can't use any of Ruby's keywords as variable names, so you won't be able to have variables named def or module or if...
Purpose of ESI & EDI registers?
What is the actual purpose and use of the EDI & ESI registers in assembler?
5 Answers
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B-Tree vs Hash Table
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You can only access elements by their primary key in a hashtable.
This is faster than with a tree algorithm (O(1) instead of log(n)), but you cannot select ranges (everything in between x and y).
Tree algorithms support this in...