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Programmatically align a toolbar on top of the iPhone keyboard
...tFields and UITextViews have an inputAccessoryView property, which you can set to any view, that is automatically displayed above and animated with the keyboard.
Note that the view you use should neither be in the view hierarchy elsewhere, nor should you add it to some superview, this is done for y...
Purpose of #!/usr/bin/python3
...line, the operating system does not know it's a python script, even if you set the execution flag on the script and run it like ./script.py. To make the script run by default in python3, either invoke it as python3 script.py or set the shebang line.
You can use #!/usr/bin/env python3 for portabilit...
Why do some functions have underscores “__” before and after the function name?
...:
self._worker()
except tornado.web.HTTPError, e:
self.set_status(e.status_code)
except:
logging.error("_worker problem", exc_info=True)
self.set_status(500)
tornado.ioloop.IOLoop.instance().add_callback(self.async_callback(self.results))
...
and the ch...
Is the order guaranteed for the return of keys and values from a LinkedHashMap object?
...kedHashMap has a predictable iteration order (insertion order). Does the Set returned by LinkedHashMap.keySet() and the Collection returned by LinkedHashMap.values() also maintain this order?
...
Trim a string based on the string length
...tringUtils.abbreviate("abcdefg", 4) = "a..."
Commons Lang3 even allow to set a custom String as replacement marker. With this you can for example set a single character ellipsis.
StringUtils.abbreviate("abcdefg", "\u2026", 6) = "abcde…"
...
UINavigationController “back button” custom text?
...ust to clarify Tyler's comment because I did not understand this at first: Setting the backBarButtonItem in a view controllers navigationItem is setting the button that will show to get BACK to this view controller. Also note that although there is no button style for the arrow button this button wi...
Why do you need to create a cursor when querying a sqlite database?
... abstraction it seems to me. A db cursor is an abstraction, meant for data set traversal.
From Wikipedia article on subject:
In computer science and technology, a database cursor is a control
structure that enables traversal over the records in a database.
Cursors facilitate subsequent proc...
difference between iframe, embed and object elements
...not possible with <object> or <iframe> where you would have to set up some other mechanism instead, such as the JavaScript postMessage API.
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How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
...ctionality in.
It's very simple, small and easy to use. Plus it has a DataSetHelper that lets you use DataSets and DataTables to easily work with Excel data.
ExcelLibrary seems to still only work for the older Excel format (.xls files), but may be adding support in the future for newer 2007/2010 f...
ExecuteReader requires an open and available Connection. The connection's current state is Connectin
...ip of the physical
connection. It manages connections by keeping alive a set of active
connections for each given connection configuration. Whenever a user
calls Open on a connection, the pooler looks for an available
connection in the pool. If a pooled connection is available, it
returns ...