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MVVM in WPF - How to alert ViewModel of changes in Model… or should I?

... A good way to think about it - Say you want to make 2 versions of your ordering system. The first is in WPF, and the second is a web interface. The shared logic that deals with the orders themselves (sending emails, entering into DB, etc) is the Model. Your application is exposing t...
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using lodash .groupBy. how to add your own keys for grouped output?

...ficult with lodash or Underscore because the arguments are in the opposite order order, so you'd have to use _.partial a lot. share | improve this answer | follow ...
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What is an undefined reference/unresolved external symbol error and how do I fix it?

...rary dependency undefined reference to `WinMain@16' Interdependent library order Multiple source files of the same name Mistyping or not including the .lib extension when using the #pragma (Microsoft Visual Studio) Problems with template friends Inconsistent UNICODE definitions Missing "extern" in c...
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curl_exec() always returns false

... +1: Simple and straight trouble-shooting for curl in PHP on curl_exec FALSE return. - Curl Verbose Mode in PHP example – hakre Nov 9 '12 at 20:10 ...
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Export specific rows from a PostgreSQL table as INSERT SQL script

... Take care that the order of the columns you SELECT matches the order of the columns in the destination database. If it doesn't, this could fail, or worse, succeed but insert bad data. – Nathan Wallace Jul ...
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Include another HTML file in a HTML file

...e, and I want to keep the amount of data to load as small as possible. In order to get the properly escaped JavaScript file without much work, you can use the following sed command: sed 's/\\/\\\\/g;s/^.*$/&\\/g;s/'\''/\\'\''/g' b.html > escapedB.html Or just use the following handy bash ...
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The relationship could not be changed because one or more of the foreign-key properties is non-nulla

...oesn't make sense to have comments for a post that doesn't exist. Same for orders and order items. In aggregation, the child object can exist irrespective of its parent. If the parent is destroyed, the child object can still exist, as it may be added to a different parent later. e.g.: the relations...
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trying to animate a constraint in swift

....3, according to your needs, you may choose one of the 3 following ways in order to solve your problem. #1. Using UIView's animate(withDuration:animations:) class method animate(withDuration:animations:) has the following declaration: Animate changes to one or more views using the specified ...
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Get last element of Stream/List in a one-liner

...reduce((first, second) -> second); This implementations works for all ordered streams (including streams created from Lists). For unordered streams it is for obvious reasons unspecified which element will be returned. The implementation works for both sequential and parallel streams. That migh...
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Sort a list by multiple attributes?

...ring']: '''helper to sort by the attributes named by strings of attrs in order''' return lambda k: [ getattr(k, attr) for attr in attrs ] then to use it # would defined elsewhere but showing here for consiseness self.SortListA = ['attrA', 'attrB'] self.SortListB = ['attrC', 'attrA'] records =...