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How to get the index of an item in a list in a single step?
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EDIT: If you're only using a List<> and you only need the index, then List.FindIndex is indeed the best approach. I'll leave this answer here for those who need anything different (e.g. on top of any IEnumerable<>).
Use the overload of Select which takes...
Rails: select unique values from a column
...ing)
Result of this is a collection of Model objects. Not plain ratings. And from uniq's point of view, they are completely different. You can use this:
Model.select(:rating).map(&:rating).uniq
or this (most efficient)
Model.uniq.pluck(:rating)
# rails 5+
Model.distinct.pluck(:rating)
U...
angularJS: How to call child scope function in parent scope
...tp://jsfiddle.net/wUPdW/2/
UPDATE: There is another version, less coupled and more testable:
function ParentCntl($scope) {
$scope.msg = "";
$scope.get = function(){
$scope.$broadcast ('someEvent');
return $scope.msg;
}
$scope.$on('pingBack', function(e,dat...
“unmappable character for encoding” warning in Java
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Absolutely. (This is better handled in C#, where unicode escaping is only applied in certain contexts - but then there's the dangerous \x escape sequence as well, which is awful.)
– Jon Skeet
Jan 21 '09 at 11:38
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How can I detect if the user is on localhost in PHP?
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@Pekka웃 you can just send e.g. Host: 127.0.0.1 and it would be populated in HTTP_HOST, so it's not reliable method at all.
– Dejan Marjanović
Mar 19 '13 at 15:49
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How to reverse a 'rails generate'
I want to delete all the files it created and roll back any changes made, but not necessarily to the database, but more to the config files.
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What is the C# version of VB.net's InputDialog?
...lt", x_coordinate, y_coordinate);
Only the first argument for prompt is mandatory
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How to activate virtualenv?
I have been through search and tried various alternatives without success and spent several days on it now - driving me mad.
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How to select html nodes by ID with jquery when the id contains a dot?
...iguity here
“#id.class” is a valid selector that requires both an id and a separate class to match; it's valid and not always totally redundant.
The correct way to select a literal ‘.’ in CSS is to escape it: “#id\.moreid”. This used to cause trouble in some older browsers (in particu...
How to print last two columns using awk
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Try and see. It does work Solaris 9 awk & nawk. The alternative is $(NF-1)
– jim mcnamara
Nov 29 '10 at 15:04
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