Information Technology Reference
In-Depth Information
Using option-click
If you option-click a symbol, Xcode displays a pop-up that duplicates the quick-help information, as shown in
Figure 6.22. This can be a slightly quicker way to access the same information. It's always available, even when
the Utilities pane is hidden. The two icons at the top right link to the symbol definition in the documentation,
and to the header or code definition.
FIGURE 6.22
Using option-click to view Quick Help. This pop-up appears even when the Utilities pane is hidden.
Using Other Documentation
The Internet is a vast resource, and you can find useful tips and code samples by searching for specific classes.
But some of the classes use names that are used in other contexts. For example, searching for UIView returns
hits that aren't relevant to iOS. You can narrow searches by adding extra keywords such as “iOS,” “OS X,” and
“iPhone.” Figure 6.23 shows the results of a combined search. All the hits are relevant, and the results include a
good selection of tutorials, discussions, and examples.
FIGURE 6.23
The web is invaluable for general searches that fill in the gaps in the official documentation. A simple web search
returns a jumble of potentially relevant information, but you usually find something of value.
