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MongoDB - Update objects in a document's array (nested updating)

... positional "$" operator. Something like: db.bar.update( {user_id : 123456 , "items.item_name" : "my_item_two" } , {$inc : {"items.$.price" : 1} } , false , true); Note that this will only increment the first matched subdocument in any array (s...
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Why does an NSInteger variable have to be cast to long when used as a format argument?

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How to save MailMessage object to disk as *.eml or *.msg file

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How to check if a given directory exists in Ruby

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How can I get the length of text entered in a textbox using jQuery?

... answered May 2 '09 at 16:35 yfeldblumyfeldblum 62.2k1010 gold badges125125 silver badges167167 bronze badges ...
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Specify multiple attribute selectors in CSS

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What does “not run” mean in R help pages?

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Is there a way to specify an “empty” C# lambda expression?

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Convert JsonNode into POJO

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Changing the case of a string in Eclipse

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