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Add new field to every document in a MongoDB collection

...field" : 1, "test" : "a" } EDIT: In case you want to add a new_field to all your collection, you have to use empty selector, and set multi flag to true (last param) to update all the documents db.your_collection.update( {}, { $set: {"new_field": 1} }, false, true ) EDIT: In the above ...
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Installing PDO driver on MySQL Linux server

... On Ubuntu you should be able to install the necessary PDO parts from apt using sudo apt-get install php5-mysql There is no limitation between using PDO and mysql_ simultaneously. You will however need to create two connections to your DB, one with mysql_ and o...
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How do I have an enum bound combobox with custom string formatting for enum values?

... TypeConverter. I think this is what I was looking for. All hail Simon Svensson! [TypeConverter(typeof(EnumToStringUsingDescription))] Enum HowNice { [Description("Really Nice")] ReallyNice, [Description("Kinda Nice")] SortOfNice, [Description("Not Nice At All")] NotN...
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How to .gitignore files recursively

... in Windows 7 using Sourcetree 1.6.12.0 and the version of git that it installs (1.8.4-preview20130916). To gitignore every file and folder under a directory recursively: MyPrject/WebApp/Scripts/special/** share ...
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ASP.NET MVC: No parameterless constructor defined for this object

...same exception occurs when a Model has no parameterless constructor. The call stack was figuring a method responsible for creating a new instance of a model. System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) ...
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What is the most efficient way to deep clone an object in JavaScript?

... Native deep cloning It's called "structured cloning", works experimentally in Node 11 and later, and hopefully will land in browsers. See this answer for more details. Fast cloning with data loss - JSON.parse/stringify If you do not use Dates, funct...
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How to get Locale from its String representation in Java?

... Call requires API level 21 (current min is 17): java.util.Locale#forLanguageTag – Vlad Oct 14 '18 at 7:53 ...
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Print list without brackets in a single row

... print(', '.join(names)) This, like it sounds, just takes all the elements of the list and joins them with ', '. share | improve this answer | follow ...
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What is the list of supported languages/locales on Android?

...n_LS [English (Lesotho)] en_MG [English (Madagascar)] en_MH [English (Marshall Islands)] en_MO [English (Macau)] en_MP [English (Northern Mariana Islands)] en_MS [English (Montserrat)] en_MT [English (Malta)] en_MU [English (Mauritius)] en_MW [English (Malawi)] en_NA [English (Namibia)] en_NF [Engli...
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What are conventions for filenames in Go?

...he go test tool. Files with os and architecture specific suffixes automatically follow those same constraints, e.g. name_linux.go will only build on linux, name_amd64.go will only build on amd64. This is the same as having a //+build amd64 line at the top of the file See the docs for the go build...