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Spring MVC: How to perform validation?

...t org.springframework.validation.Validator . A question about that: I saw it validates a class. Does the class have to be filled manually with the values from the user input, and then passed to the validator? ...
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Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation

It is loosely related to this question: Are std::thread pooled in C++11? . Though the question differs, the intention is the same: ...
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Best way to require all files from a directory in ruby?

...follow | edited Apr 27 '10 at 12:13 JasonSmith 67k2121 gold badges118118 silver badges147147 bronze badges ...
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How to get distinct values from an array of objects in JavaScript?

... If this were PHP I'd build an array with the keys and take array_keys at the end, but JS has no such luxury. Instead, try this: var flags = [], output = [], l = array.length, i; for( i=0; i<l; i++) { if( flags[array[i].age]) continue; flags[array[i]....
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CSS last-child(-1)

...to the new second last child when more children are added to the list, yes it will. Interactive fiddle. ul li:nth-last-child(2) share | improve this answer | follow ...
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Check if inputs are empty using jQuery

...s('warning'); } }); And you don't necessarily need .length or see if it's >0 since an empty string evaluates to false anyway but if you'd like to for readability purposes: $('#apply-form input').blur(function() { if( $(this).val().length === 0 ) { $(this).parents('p').addClass(...
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How to implement a ConfigurationSection with a ConfigurationElementCollection

...= false)] [ConfigurationCollection(typeof(ServiceCollection), AddItemName = "add", ClearItemsName = "clear", RemoveItemName = "remove")] public ServiceCollection Services { get { return (ServiceCollection)base["Services"]; } } } And that ...
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Measuring text height to be drawn on Canvas ( Android )

Any straight forward way to measure the height of text? The way I am doing it now is by using Paint's measureText() to get the width, then by trial and error finding a value to get an approximate height. I've also been messing around with FontMetrics , but all these seem like approximate methods ...
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Vagrant error: NFS is reporting that your exports file is invalid

...(OS X 10.9 (Mavericks)), but rolling back to these versions seemed to fix it for me. share | improve this answer | follow | ...
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How to get document height and width without using jquery

How to get document height and width in pure javascript i.e without using jquery . I know about $(document).height() and $(document).width() , but I want to do this in javascript . ...