Curly brace matching was pretty easy to turn on. How can I turn on parenthesis matching in Xcode?
on Xcode Version 6.1 (6A1052d), you just need to double click on one of the parenthesis and the entire code that the parenthesis is scoping out is highlighted.
for example, if you have a code like the one below and you double click '{' or '}' bracket the entire code in their scope is highlighted :
if(condition == true)
{
//do something
}
Choose editor -> code folding -> focus
Edit
In XCode 9 the only solution is to put mouse over parentheses while pressing command button. Only this works.
Previous
To extend the other answers
it is possible to roll in/out code inside brackets.
Choose Editor > Structure > Balance Delimiter
url
Nevertheless, as already written earlier, the major feature is
Editor > Code Folding > Focus Follows Selection
press command key and its hover the brace and parenthesis ...
You must be running Xcode in Snow Leopard and install Xcode from the Snow Leopard disc that you got at WWDC. If you did not get a Snow Leopard disk, then you are out of luck unless you find one elsewhere.
The version of Xcode needed is 3.2 and the other components in the about page are:
Component versions
Xcode IDE: 1600.0
Xcode Core: 1599.0
ToolSupport: 1591.0
Please have a look at below answer for Xcode 9.0 and above:
Xcode highlights an opening delimiter (brace, bracket, parenthesis) when you move the cursor left-to-right over the matching closing delimiter. The highlight animation lasts about 1 second total, which is plenty in the case where you need a hint (and as you say the other delimiter is nearby).
If you need a more persistent indication, you can double-click either the opening or the closing delimiter, and Xcode will select both delimiters and their contents. (You can also use this, for example, to get quickly to one delimiter from another, even if they're far apart — double-click the delimiter you can see, use the left or right arrow to get the other end of the selection.)
With latest xcode13 we can permanent active this option with
"Xcode" --> "Preference" ---> "Text Editing" and by enabling "Code folding ribbon"
Thanks
Related
Xcode offers the following options under
Preferences > Text Editing > Indentation > Tab key:
In leading white space: Pressing Tab inserts an indentation only at the beginning of a line or following a space.
Never: Pressing Tab never causes an indentation.
Always: Pressing Tab always causes an indentation.
I checked the documentation for these options (that's what is to the right of the colons) but I still don't understand. What is "an indentation"? What I'd really like is if Xcode wouldn't act like it knows better than me and try reindenting lines of code that were already perfectly indented (I find it often does this inside of blocks - I'll have my code nested one level more than the line before it, and for whatever reason it tries aligning with the colon that starts the block argument, leading to unwieldy long lines, as if Obj-C doesn't have enough of those.)
Can anyone give me examples of how Xcode's behavior will change if I choose each of those options? Will one of those options make Xcode behave/autoindent the way I want it to?
If what you want is:
if Xcode wouldn't act like it knows better than me and try reindenting lines of code that were already perfectly indented
then the "Tab key" indentation setting has nothing to do with what you want.
Instead, try unchecking "Automatically indent based on syntax" and Xcode will stop changing your indentation level.
Alternatively, uncheck { and } under "Automatic indent for:".
See also: Xcode Text Editing Preferences Help: Setting Source Editing and Indenting Preferences
How can I turn on curly brace matching?
This worked fine in Xcode 3.x. In Xcode 4 is doesn't work. I've already checked the box for "Automatically insert closing '}'" in the Preferences->Text Editing->Editing panel.
How can I turn on parenthesis matching?
How can I turn on code compeletion for "if/else-if", "for" etc?
In Xcode 3.x I would start to type "for" and autocomplete would provide the parenthesis, curly braces, semi-colons etc. I could then press escape for a menu containing (amongst other things) the option to do a "for i" loop (in which case Xcode would fill in "int i; i < n; i++" with n selected so I could just type a value).
In Xcode 3.x I could do something similar for if/else-if blocks. I could just start to type "if" and autocomplete would provide parenthesis, curly braces etc.
Edit: after looking for the "get info" option for a source code file (was simply right click the file name in Xcode 3) for five minutes I decided to downgrade to version 3.2.x. Which means hours of downloading. This really stinks :-(
Auto-} works a little differently in Xcode4. It doesn't appear as soon as you type the {. You have to hit return after to get the closing brace. So typing { gives the autocomplete. It feels a little odd at first, it took me awhile to adjust, but I think it makes sense. Most coding styles dictate a return after the opening brace, so it pretty much will always auto-close when you want it to. It doesn't give the } though in a case like making a single line if into a multi-line one. You can now add in the opening brace, move the curser to after the line, and enter the closing brace. Before when I did something like that I'd have to spend time deleting the auto-}.
For code completion, it sounds like you're having an indexing issue. Code completion still works as you want (it's actually a lot smarter now) in Xcode4. Your syntax coloring is also usually off when this happens. I ran into it with one of my projects and fixed it by editing my build settings, I had a bad one in it. You might also try deleting the project's derived data in the organizer. That'll force a rebuild of the index.
The "get info" items have moved. It's one of the land mines of the IDE rewrite. They're not in the file inspector. Show the utilities pane and then select the file inspector (the first icon in the tab bar).
Xcode 4 is a bit alien when coming from Xcode 3. They changed a lot of stuff. I'd recommend getting a feel for it. At some time in the near future Xcode 3 will be deprecated and you won't get the new SDks for it. You can have Xcode 3 and 4 both installed at once which is helpful for making the switch. That way you can fall back to Xcode 3 when you get stuck on something and will allow you to gradually make the change.
In most multi-document editors for windowing environments, Control-TAB will utilize an MRU list to bring the user back to the last visible file. What is the appropriate command to accomplish this in Xcode 3.x?
I currently have Ctrl-TAB mapped to "View|Previous File", however this does not appear to be an MRU. Worse yet, if it hits the "beginning" of the list (should be a circular buffer), it falls back on inserting an actual TAB character into the text editor.
As of Xcode Version 3, there isn't anything that's exactly like the MRU you describe - however, check out the discussion on this page for some options that will get you closer to the behavior you want.
In recent XCode (10.3), when in a code editor press:
ctrl+1, right, right
Then use up and down keys and enter
to select from the MRU sorted list of recent files.
There is even an option to increase the size of the history.
In Xcode 3 (or any Mac application) you can use Command-Tilde (⌘~) to switch between open windows.
In Xcode 4 you use ⌘} for next tab and ⌘{ for previous tab - command shift bracket.
As a side note, for some reason Xcode 4 won't let me set the key binding for previous/next tab to the standard Control-Tab. When I try it puts in Command-Control-Tab.
Back Arrow Broken In Xcode?
Is there keyboard command to go back/forward one file at a time.
Xcode 3.2 changed the behavior of Cmd-Opt <-- and -->. As noted in another question, they do not operate on a file level like in previous versions of Xcode, but on an "edit point", making it cumbersome to flip through a list of files (the quick way to do it, since Xcode does not support Tabs, as in Eclipse).
Rob Keniger found a partial solution that he noted in another post:
"Hold down the option key while you click the forward/backward arrows ..."
But this requires fiddling with the mouse. Is there any way to do it with the keyboard only?
EDIT:
Later versions of Xcode (v7.2+) now have a Navigate menu (and it changes the keyboard shortcuts yet again):
In XCode 4.4 the following sequence works:
Cmd + Ctrl + ←
and it operates on a file level.
On Xcode 8 I use 2 fingers left / right
Beginning in XCode 3.2.3, the following key sequence works:
Cmd + Option + Shift + ←
Without the Shift key, it just goes back to the previous cursor position. Adding Shift jumps to the previous file (next file, in combination with →).
Navigation shortcuts for Xcode
is there a way to have Xcode append a closing bracket ")" when I type the opening one "("? I know that it does this for those {}. I really miss Textmate :( A generic way to define which chars should be automatically inserted when the opening ones are entered would be kickass.
In Xcode 3.1 go to Preferences->Indentation
Check Syntax-ware indenting to on
and check Automatically insert closing "}"
and choose the characters you want to be inserted when the opening one is.
Also why not use Textmate nothing stops you and Xcode will notice if a file is edited externally
Have a look under Edit->Insert Text Macro->Objective C->Bracket Expression. This will insert a matched pair of brackets (or if you have something highlighted, put brackets around it). You could bind this to [ as a keyboard shortcut.
You can follow the instructions here to create one for parentheses. I tried but couldn't make it work.
http://cocoawithlove.com/2008/06/hidden-xcode-build-debug-and-template.html#textmacros
Personally, I drag the classes folder over to Textmate and edit there. I switch back to Xcode when I need to type in some long method name, or to build. I've been building a library of snippets for some of the common things I do in Textmate to make life easier there.