. Sticky Notes
Refresh your concepts about Delegation, Notification, or Observation in iOS
A common problem that we often experience when developing iOS applications, is how to allow communication between our controllers, without the need to have excessive coupling. Three common patterns that appear time and time again throughout iOS applications include:
- Notification Center, and
- Key value observing
So why do we need these patterns and when should and shouldn’t they be used?
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One of my favorites in the new Operating System. In Windows 7, there are sticky notes that are native to the operating system. You can use them to set notes and reminders for yourself, to write a to-do list or jot down anything else that you’d use a pad of paper for. Just open Sticky Notes by tapping the Start button . In the search box, type Sticky Notes, and then tap Sticky Notes in the list of results. To create additional notes, click the New Note button. You can also open a new note by pressing Ctrl+N.
To create a Sticky Note, click Start→All Programs→Accessories→Sticky Notes.
Windows opens a new blank note on the desktop, positioning the cursor at the beginning of the note.
Type the text of the note.
You can also format the note text if you want. Just select the desired text and then press the appropriate shortcut key: Ctrl+B for bold text, Ctrl+I for italics, and Ctrl+U for underlining.
You’ll notice that the text automatically wraps to a new line, and if your text doesn’t fit on the note, Windows automatically expands the height of the note to accommodate the length of your note.
When you finish entering the note text, simply click somewhere on the desktop outside the sticky note itself. Alternatively, you can click the New Note button (the one with the plus sign) to start a new sticky note. The note you create will stay on the desktop. If you use sticky notes, you’ll want to get acquainted with the Sticky Notes Quick Launch button on the taskbar. Click it once to temporarily hide all the sticky notes on your desktop. To bring all of your sticky notes back to the desktop or to the top of the windows on the desktop, click it again.
To color-code a sticky note, right-click the note and then click the color you want. Your choices here are Blue, Green, Pink, Purple, White, or Yellow.
To delete a note that you no longer need, click its Delete button in the upper-right corner. The first time you delete a note, Windows asks you to confirm the deletion. If you don’t want to see this alert again, select the Don’t Display This Message Again check box before you click Yes.