In Jupyter Notebook, you can toggle/comment a block of selected code with Ctrl + /, but this doesn't work in Google Colaboratory notebooks. Is there a way to comment out several lines of Python code easily in a Colaboratory notebook?
I've looked in the documentation, but I came up short.
In the default Colab keyboard shortcuts, you can block comment text using Ctrl+/.
If this does not work for you, check Tools->Keyboard Shortcuts and search for "Comment Current Line" to see what the shortcut is within your current settings.
You can select the lines of code and press (Ctrl + /) to comment or uncomment your selected lines of code.
You can also use triple single quotes (''') at the start and end of the code block you are interested to comment out.
''' ...Your commented code... '''
If you are a Mac user, you can use Command + / for commenting out, and if you want to uncomment again, select the lines and then Command + /.
For Mac users who don't have an American keyboard like me: it seems like Colab thinks you are using an American keyboard for shortcuts, and so to make the '/' character you have to press the second button to the right of the 'm'. I'll leave an image to explain.
My keyboard looks like this:
As I said, I have to press the . key to make '/' as if I were using an American keyboard.
For Mac users:
first select the lines that you want to comment
second push these buttons: Command + Ctrl + Shift + /
Especially in the Italian keyboard it would be: Command + Ctrl + Shift + 7 (because the "/" character is combined with button "7")
For some reason, I need to do Ctrl + Shift + :.
Which technically is Ctrl + /.
(I use an AZERTYUIOP keyboard.)
if you come here with an Italian keyboard you should press:
command + control + .
When using Mac the keyboard shortcut is ⌘+/.
Note that depending on your layout, / cannot be directly addressed and its combination is different when combined with ⌘. For example, on a German keyboard / is [Shift]+7 but the combination ⌘+/ is ⌘+[Shift]+ß.
When you are unsure about which combination is correct, use the inbuilt keyboard viewer which provides a live view of the meaning of keys while selecting modifiers.
Keyboard Viewer: default keyboard mapping
Keyboard Viewer: modifier keys keyboard mapping
I am new I tried
ctrl + space
and ;looked into the hints (ctrl shift P)
any help? I just tried to defined a func and code complete the name... ;P not even looking into api methods
ah ok it's ctrl + space, I had a binding problem in my chrome
How can I selected, for instance, 5 lines of code, and replace all instance of myObject1 with myObject2. If subsequent lines of code contain myObject1 reference that I wish not to change... This way I can quickly apply of find & replaces in this scope of code very conveniently without worrying about side effects. Is this possible?
for me it is CTRL + H or CTRL + SHIFT + H
When I select multiple methods or piece of code containing multiple methods, I can only expand/collapse the first method.
And if I place caret to multiple positions via Shift + Alt + Button Click, then I can only expand/collapse the one where are placed the caret the last.
Is there a way to expand/collapse multiple methods in IDEA?
Note: I am using a shortcut Ctrl + +/- to expand or collapse!
Your solution is:
Ctrl - Shift - Numpad - Collapse All
Ctrl - Shift - Numpad + Expand All
I know that Ctrl + N is to find classes and it is very useful. But what about methods?
ctrl + F12 (cmd + F12 on macOS) will show all members of the current class in a popup window and let you pick up one. It works exactly like the ctrl + o shortcut in eclipse, much faster than ctrl + alt + shift + n
Windows : ^ ctrl + F12
MacOS : ⌘ cmd + F12
Above commands will show the functions/methods in the current class.
Press ⇧ SHIFT TWO times if you want to search both class and method in the whole project.
Ctrl + Alt + Shift + N allows you to search for symbols, including methods.
The primary advantage of this more complicated keybinding is that is searches in all files, not just the current file as Ctrl + F12 does.
(And as always, for Mac you substitute Cmd for Ctrl for these keybindings.)
Android Studio on Mac
Command + Option + O
Opens up the Symbol lookup that you can jump to most of the methods/functions in your currently opened document.
Intellij IDEA 2017.3.4 - 2018.2 (Ultimate) on OSX
CMD + fn + F12
will show all members of the current class in a popup window, then you can search method in that class.
BUT, this answer is depends on your Keyboard setting. If your keyboard setting in
System Preferences > Keyboard > Use all F1, F2, etc. keys as standard function keys
is selected, then the shortcut becomes
CMD + F12
CTRL + F12 brings up the File Structure navigation menu, which lets you search for members of the currently open file.
IntelliJ IDEA Version 12.13 Ultimate Edition:
Macs:
command + option + shift + N
or on Menu -> Navigate > Symbol ...
Slightly beside the actual question, but nonetheless useful: The Help menu of Intellij has an option 'Default Keymap reference', which opens a PDF with the complete mapping. (Ctrl+F12 is mentioned there)
If you just want to look for methods:
On mac OS X 10.5+ binding, it is Alt + ⌘ + O
By Default XWin Key binding, it is Shift + Ctrl + Alt + N
You can also press double SHIFT then, you can search anything (not only method, but also class, files, and actions)
It is worth adding that if you want to search for a method of a class, you can use a . (dot) between the class and method name inside of either the search everywhere or search symbols dialog. This even works with IDEAs usual search benefits. For example, you can search for LDT.now and LocalDateTime::now will pop up as a result. (As long as you are searching All Files and not just Project Files).
If you click on a method, you can do Ctrl + B to go to that method's declaration. Similar to F12 in MS Visual Studio.
To Find the actions build in the IDEA(reindent, create new, ...) you can use
CRTL+SHIFT+A
then type indent for example and ENTER.
If I need navigate to method in currently opened class, I use this combination: ALT+7 (CMD+7 on Mac) to open structure view, and press two times (first time open, second time focus on view), type name of methods, select on of needed.
Intellij v 13.1.4, OSX
The Open Symbol keyboard shortcut is
command+shift+s
Ctrl + Shift + Alt+ 7 after selecting the method
I tried SHIFT + SHIFT and ALT + CMD + O
But I think the most powerful and easy to use feature is find in all files CMD + SHIFT + F.
Choose regex and write .*partOfMethodName.*\( and it shows all places and can see the actual source code in place without going to that specific file.