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LINQ - Left Join, Group By, and Count

...into j1 from j2 in j1.DefaultIfEmpty() group j2 by p.ParentId into grouped select new { ParentId = grouped.Key, Count = grouped.Count(t=>t.ChildId != null) } share | improve this answer ...
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Random record from MongoDB

...llection. db.mycoll.aggregate([{ $sample: { size: 1 } }]) If you want to select the random document(s) from a filtered subset of the collection, prepend a $match stage to the pipeline: // Get one random document matching {a: 10} from the mycoll collection. db.mycoll.aggregate([ { $match: { a:...
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powershell - extract file name and extension

...tated, use the BaseName and Extension properties: PS C:\> dir *.xlsx | select BaseName,Extension BaseName Extension -------- --------- StackOverflow.com Test Config .xlsx If you are given the file name as part of string...
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Copy / Put text on the clipboard with FireFox, Safari and Chrome

...browsers using document.execCommand('copy'); This will copy currently selected text. You can select a textArea or input field using document.getElementById('myText').select(); To invisibly copy text you can quickly generate a textArea, modify the text in the box, select it, copy it, and then...
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Xcode is not currently available from the Software Update server

...e Xcode command line tools is pointed correctly using this command xcode-select -p Which might show some path like /Applications/Xcode.app/Contents/Developer Change the path to correct path using the switch command xcode-select --switch /Library/Developer/CommandLineTools/ this should...
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How can I selectively escape percent (%) in Python strings?

... >>> test = "have it break." >>> selectiveEscape = "Print percent %% in sentence and not %s" % test >>> print selectiveEscape Print percent % in sentence and not have it break. ...
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Remove a folder from git tracking

...th ways. If unselecting, it does not allow to push, but then I changed one char in another file which should be tracked. Still does not help – Darius.V Dec 13 '17 at 13:50 ...
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jQuery - select the associated label element of a input field [duplicate]

I have a set of input fields, some of them have labels associated, some not: 3 Answers ...
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jQuery selector for inputs with square brackets in the name attribute

I'm trying to select this element which has square brackets in the name attribute: 5 Answers ...
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Embedding SVG into ReactJS

... @AndrewPatton Multiple Css Class names with the tick char does not work: '.class1, .class2{fill: #005baa;}' How can I fix that? – HelloWorld Jun 7 '18 at 15:07 ...