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Xcode duplicate line

... command item as the screenshot below (name them what you want): That's: selectLine:, copy:, moveToEndOfLine:, insertNewline:, paste:, deleteBackward: Restart Xcode and go to Preferences - Key Bindings, search for your command. Set a key combination for the command: Finally unleashed the power of...
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jQuery empty() vs remove()

... empty() will empty the selection of its contents, but preserve the selection itself. remove() will empty the selection of its contents and remove the selection itself. Consider: <div> <p><strong>foo</strong></p> &...
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Debugging App When Launched by Push Notification

...opdown. (⌘+<) Than choose your product - 'Run MyApp.app' on the left. Select 'Info' tab on the right. And finally choose "Wait for MyApp.app to launch" option. More here in "Customize Executables in the Scheme Editor" section. EDIT: In case you miss logs in GDB, see Louis Gerbarg's comment t...
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How can I select an element by name with jQuery?

... You can use the jQuery attribute selector: $('td[name ="tcol1"]') // matches exactly 'tcol1' $('td[name^="tcol"]' ) // matches those that begin with 'tcol' $('td[name$="tcol"]' ) // matches those that end with 'tcol' $('td[name*="tcol"]' ) // matche...
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How to combine class and ID in CSS selector?

...is is super old and people keep finding it: don't use the tagNames in your selectors. #content.myClass is faster than div#content.myClass because the tagName adds a filtering step that you don't need. Use tagNames in selectors only where you must! ...
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Join/Where with LINQ and Lambda

...tabase.Post_Metas on post.ID equals meta.Post_ID where post.ID == id select new { Post = post, Meta = meta }; If you're really stuck on using lambdas though, your syntax is quite a bit off. Here's the same query, using the LINQ extension methods: var id = 1; var query = database.Posts //...
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How to get a value from a cell of a dataframe?

... Most answers are using iloc which is good for selection by position. If you need selection-by-label loc would be more convenient. For getting a value explicitly (equiv to deprecated df.get_value('a','A')) # this is also equivalent to df1.at['a','A'] In [55]: df1....
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Horizontal ListView in Android?

...he ListView horizontally? I have done this using a gallery view, but the selected item comes to the center of the screen automatically. I don't want the selected item at the same spot I clicked. How can I rectify this problem? My idea was to set the ListView with a horizontal scroll. Share your ...
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Create an array or List of all dates between two dates [duplicate]

... LINQ: Enumerable.Range(0, 1 + end.Subtract(start).Days) .Select(offset => start.AddDays(offset)) .ToArray(); For loop: var dates = new List<DateTime>(); for (var dt = start; dt <= end; dt = dt.AddDays(1)) { dates.Add(dt); } EDIT: As for padding value...
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When should I use a composite index?

...nefit a query that uses those fields for joining, filtering, and sometimes selecting. It will also benefit queries that use left-most subsets of columns in that composite. So the above index will also satisfy queries that need index( column_A, column_B, column_C ) index( column_A, column_B ) index(...