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EC2 instance has no public DNS
...es not have a public IP
You can assign an Elastic IP to this instance and then log in using that IP.
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Add an element to an array in Swift
... to create a new array with the element that I'm attempting to insert, and then append all the elements from the original array. Pretty sure this is the result of a retain problem elsewhere - somehow these objects are fine so long as they're left in their original array spots, but if iOS attempts to...
How to grep and replace
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Another option is to use find and then pass it through sed.
find /path/to/files -type f -exec sed -i 's/oldstring/new string/g' {} \;
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How to add spacing between UITableViewCell
... new section (rather than a new row) for each array item. The sections can then be spaced using the section header height.
How to do it
Set up your project as described in UITableView example for Swift. (That is, add a UITableView and hook up the tableView outlet to the View Controller).
In the In...
Problems with Android Fragment back stack
...urrently added fragments that were added with the same containerViewId and then add(int, Fragment, String) with the same arguments given here.
then what's happening is like this (I'm adding numbers to the frag to make it more clear):
// transaction.replace(R.id.detailFragment, frag1);
Transaction...
How to Apply Gradient to background view of iOS Swift App
...Swift, just store the array in variable with explicit type [AnyObject] and then assign it to .colors property.
– Tricertops
Jul 20 '14 at 19:17
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Ruby on Rails: how to render a string as HTML?
...w works fine, but all it's doing is converting the string to a string, and then calling html_safe. When I know I have a string, I prefer calling html_safe directly, because it skips an unnecessary step and makes it clearer what's going on. Details about string-escaping and XSS protection are in this...
Iterate over object attributes in python
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If you have a.b as some custom class B then vars(a)["b"] is a.b, as one would expect; nothing else would really make sense (think of a.b as syntactic sugar for a.__dict__["b"]). If you have d = vars(a) and call repr(d) then it will call repr(d["b"]) as part of ret...
Emacs - Multiple columns one buffer
...h just one window, split it into two side-by-side windows using C-x 3, and then type M-x follow-mode. From then on, you can edit the buffer in either of the two windows, or scroll either one; the other window follows it.
In Follow mode, if you move point outside the portion visible in one window an...
How can I prevent Visual Studio 2013 from closing my IIS Express app when I end debugging?
Previously in 2012, if I debugged in Chrome (for example), and then stopped the debugger, the website would remain running in IIS Express. This no longer seems to be the case in 2013.
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