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A migration to add unique constraint to a combination of columns
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The problem with the model level validation is that it doesn't scale. Two servers could run the same data through at the same time (like a double tap on an api heavy app) I have two identical records in my DB right now and the model has the validation..
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Define variable to use with IN operator (T-SQL)
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DECLARE @mylist TABLE (Id int)
INSERT INTO @mylist
SELECT id FROM (VALUES (1),(2),(3),(4),(5)) AS tbl(id)
SELECT * FROM Mytable WHERE theColumn IN (select id from @mylist)
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Passing variables through handlebars partial
...of html potentially on the same page, but you're doomed if the partial has IDs... the same ID will show up more than once and becomes invalid. It'd be extremely useful if you can pass in arguments to partials when invoking it, to further customize its content.
– Xavier_Ex
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How to handle anchor hash linking in AngularJS
...call it in your controller, and it will scroll you to any element with the id found in $location.hash()
app.controller('TestCtrl', function($scope, $location, $anchorScroll) {
$scope.scrollTo = function(id) {
$location.hash(id);
$anchorScroll();
}
});
<a ng-click="scrollTo('fo...
How to check if two arrays are equal with JavaScript? [duplicate]
...s, we run into the tree isomorphism problem http://logic.pdmi.ras.ru/~smal/files/smal_jass08_slides.pdf - fortunately it's not as hard as general graph isomorphism; there is in fact an O(#vertices) algorithm to solve it, but it can get very complicated to do it efficiently. The pathological case is ...
Aligning textviews on the left and right edges in Android layout
I am getting started with Android. I am having trouble getting a simple layout going.
9 Answers
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Why charset names are not constants?
...o ranting about Java's charset support - why isn't there a constructor for FileWriter/FileReader which takes a Charset? Basically those are almost useless classes due to that restriction - you almost always need an InputStreamReader around a FileInputStreamor the equivalent for output :(
Nurse, nur...
Passing multiple values to a single PowerShell script parameter
...led script who must connect to a list of Server this way:
Powershell.exe -File "YourScriptPath" "Par1,Par2,Par3"
Then inside the script:
param($list_of_servers)
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Connect-Viserver $list_of_servers.split(",")
The split operator returns an array of string
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SQL WHERE condition is not equal to?
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You can do like this
DELETE FROM table WHERE id NOT IN ( 2 )
OR
DELETE FROM table WHERE id <> 2
As @Frank Schmitt noted, you might want to be careful about the NULL values too. If you want to delete everything which is not 2(including the NULLs) then add O...