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Add swipe to delete UITableViewCell

... if (editingStyle == UITableViewCellEditingStyle.Delete) { // handle delete (by removing the data from your array and updating the tableview) } } Swift 3.0: override func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool { return true } overrid...
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How to set username and password for SmtpClient object in .NET?

...of the constructor, one uses info from web.config, one specifies the host, and one the host and port. But how do I set the username and password to something different from the web.config? We have the issue where our internal smtp is blocked by some high security clients and we want to use their smt...
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What is the difference between Spring's GA, RC and M2 releases?

... GA = General availability (a release); should be very stable and feature complete RC = Release candidate; probably feature complete and should be pretty stable - problems should be relatively rare and minor, but worth reporting to try to get them fixed for release. M = Milestone buil...
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PHP: How to check if image file exists?

.../'.$filename)) { … } Also, make sure $filename is properly validated. And then, it will only work when allow_url_fopen is activated in your PHP config share | improve this answer | ...
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Why does my application spend 24% of its life doing a null check?

I've got a performance critical binary decision tree, and I'd like to focus this question on a single line of code. The code for the binary tree iterator is below with the results from running performance analysis against it. ...
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Elegant way to invert a map in Scala

Learning Scala currently and needed to invert a Map to do some inverted value->key lookups. I was looking for a simple way to do this, but came up with only: ...
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What does principal end of an association means in 1:1 relationship in Entity framework

... In one-to-one relation one end must be principal and second end must be dependent. Principal end is the one which will be inserted first and which can exist without the dependent one. Dependent end is the one which must be inserted after the principal because it has foreign...
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Setup RSpec to test a gem (not Rails)

... used Bundler ( bundle gem my_gem ) to setup the structure for the new gem and edit the *.gemspec manually. I also added s.add_development_dependency "rspec", ">= 2.0.0" to gemspec and did a bundle install . ...
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Error handling with node.js streams

What's the correct way to handle errors with streams? I already know there's an 'error' event you can listen on, but I want to know some more details about arbitrarily complicated situations. ...
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How to show only next line after the matched one?

Thanks to this command for every line that has 'blah' in it, I get the output of the line that contains 'blah' and the next line that follows in the logfile. It might be a simple one but I can't find a way to omit the line that has 'blah' and only show next line in the output. ...