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Simple Pivot Table to Count Unique Values

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How to remove array element in mongodb?

...ollection.update( { _id: id }, { $pull: { 'contact.phone': { number: '+1786543589455' } } } ); It will find document with the given _id and remove the phone +1786543589455 from its contact.phone array. You can use $unset to unset the value in the array (set it to null), but not to remove it c...
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How do I convert dates in a Pandas data frame to a 'date' data type?

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RegEx: Smallest possible match or nongreedy match

... 192 For a regular expression like .* or .+, append a question mark (.*? or .+?) to match as few ch...
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Add and remove multiple classes in jQuery

... | edited Oct 3 '19 at 20:30 simhumileco 17.9k1010 gold badges9393 silver badges8484 bronze badges ...
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Create a custom View by inflating a layout?

... answered Dec 1 '10 at 20:48 chubbsondubschubbsondubs 33.9k2222 gold badges9595 silver badges132132 bronze badges ...
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How to get commit history for just one branch?

... 145 You can use a range to do that. git log master.. If you've checked out your my_experiment b...
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How to alias a table in Laravel Eloquent queries (or using Query Builder)?

...Let's see it in action with an awesome tinker tool $ php artisan tinker [1] > Schema::create('really_long_table_name', function($table) {$table->increments('id');}); // NULL [2] > DB::table('really_long_table_name')->insert(['id' => null]); // true [3] > DB::table('really_long_ta...
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What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?

On the NerdDinner example of Professional ASP.NET MVC 1.0 there's a method to create a new dinner as copied bellow (page 89 of the free NerdDinner version). ...
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difference between #if defined(WIN32) and #ifdef(WIN32)

I am compiling my program that will running on linux gcc 4.4.1 C99. 3 Answers 3 ...