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How to detect when cancel is clicked on file input?

...entListener("focus",fn,{once: true}). However I couldn't get it to fire at all using document.body.addEventListener.. I don't know why. Instead I got the same result with window.addEventListener. – WoodenKitty Aug 13 '16 at 2:21 ...
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Wireshark localhost traffic capture [closed]

...ns that this is not possible on Windows using Wireshark alone, you can actually record it using a workaround as mentioned in a different answer. EDIT: Some 3 years later, this answer is no longer completely correct. The linked page contains instructions for capturing on the loopback interface. ...
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What is PostgreSQL explain telling me exactly?

...ple, e.g. the cost of the LIMIT is cost=0.00..3.39 and the cost of sequentially scanning post is cost=0.00..15629.12. The first number in the tuple is the startup cost and the second number is the total cost. Because I used EXPLAIN and not EXPLAIN ANALYZE, these costs are estimates, not actual measu...
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Update a record without first querying?

... @Gabriel Won't this update all properties though? What if I only want to modify a single one? – David Pfeffer Aug 15 '12 at 0:45 22 ...
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Where are the Properties.Settings.Default stored?

... In order to work with newer versions of Windows' policy of only allowing read access by default to the Program Files folder (unless you prompt for elevation with UAC, but that's another topic...), your application will have a settings folder under %userprofile%\appdata\local or %userprofi...
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Clear Application's Data Programmatically

I want to clear my application's data programmatically. 6 Answers 6 ...
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How to stop an app on Heroku?

... your app you can scale the web dynos down to zero which effectively takes all your app http-processes offline. $ heroku ps:scale web=0 Scaling web processes... done, now running 0 share | improve...
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Delete first character of a string in Javascript

..."foobar"; var s2 = s1.substring(1); alert(s2); // shows "oobar" To remove all 0's at the start of the string: var s = "0000test"; while(s.charAt(0) === '0') { s = s.substring(1); } share | improv...
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How do I return early from a rake task?

... A Rake task is basically a block. A block, except lambdas, doesn't support return but you can skip to the next statement using next which in a rake task has the same effect of using return in a method. task :foo do puts "printed" next put...
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Only initializers, entity members, and entity navigation properties are supported

... return View(debts); } That, of course, would mean that you bringing all of the data back to the web server and filtering the data on it. If you want to filter on the DB server, you can create a Calculated Column on the table or use a Stored Procedure. ...