How can I make Intellisense show up the function parameters once the parentheses are written down? It shows only if I just type them like in the tutorial example, but not once they are already written and I set the cursor with the mouse inside.
I think you want the Trigger Parameter Hints command. If you type it in the command palette it will show your current short-cut (mine is Ctrl+Shift+Space).
Related
I've recently upgraded PowerShell to version 7.3.0 version and now, when I type a command, I see its suggestions like when I'm typing pip it adds list like in this image. Or when I type start of the command it suggests its full name.
The problem is that when I press Tab it doesn't complete the command, instead it just starts listing current directories, i.e. here is an image after pressing Tab once.
Also even when I start typing the full name of the command like pip li it still shows the ending, but when pressing Tab it just does nothing.
I expected this to complete the current command with the suggestion after Tab is pressed.
I've tried to google this problem but haven't found the exact same case I have with 7.3.0 version.
Just press -> (right arrow) key
If you want to change key bindings:
source: https://devblogs.microsoft.com/powershell/announcing-psreadline-2-1-with-predictive-intellisense/
Key Bindings for Predictions
Key bindings control cursor movement and additional features within the prediction. To support users running Predictive IntelliSense on multiple platforms, key bindings are user-settable from the command line or your profile script.
PSReadLine contains functions to navigate and accept predictions. As an example, to accept a displayed prediction, PSReadLine contains functions:
AcceptSuggestion – Accept the current inline suggestion
AcceptNextSuggestionWord – Accept the next word of the inline suggestion
AcceptSuggestion is built within ForwardChar, which by default is bound to RightArrow. Pressing RightArrow accepts an inline suggestion when the cursor is at the end of the current line.
AcceptNextSuggestionWord is built within the function ForwardWord, which can be bound with Ctrl+f by Set-PSReadLineKeyHandler -Chord "Ctrl+f" -Function ForwardWord. Pressing Ctrl+f accepts the next word of an inline suggestion when the cursor is at the end of current editing line.
As a user, you can bound other keys to AcceptSuggestion and AcceptNextSuggestionWord for similar functionalities. Search for ForwardCharAndAcceptNextSuggestionWord in SamplePSReadLineProfile.ps1 for an example to make RightArrow accept the next word from inline suggestion, instead of the whole suggestion line.
List of additional suggested key bindings defined in PSReadLine SamplePSReadLineProfile.ps1
When the cursor's positioned in the middle of an argument list (making a method call), is there a way to bring up the method's signature with the parameter that that the cursor is on highlighted? Ctrl-space (sort of) brings up the signature, but it includes the huge search list of everything else I can legally type right there, and it's up to me to count through the arguments and the parameters to figure out which one I'm lined up on. (that popup also disappears if I try to move to the next or previous argument).
I've had this struggle with compiled code, and worse with code as I type it in. I typically type the name of the object, then a dot, and then I wait for the signature list to pop up (that filters down as I type). When I see the signature I'm after, I auto-complete with tab or Enter, and then I always end up in a struggle. NB pastes in variable names that are usually about 99% wrong, and I try to navigate the little red, comma-triggered edit boxes, hoping the signature popup will stay in view while I struggle to edit, delete (and stop thinking about) all the (semantic) errors. I usually end up botching it and loose the precious signature window that highlights each parameter as I moved through the argument list.
Any way to get that thing back (with the parameter highlighting)? And/or make the red editing boxes go away? And/or block NB from populating with all the errors?
Super thankful for any help or tips!
Netbeans show popup with method signatures and popup with method documentation only when your cursor is placed at the name of a method. Popup is displayed automatically when writing method name or on demand if you press Ctrl+Space.
When your cursor is placed at the argument list, only parameter names from method signature are displayed in form of a small tooltip. You can force display of this tooltip by Ctrl+P. Unfortunately there is no way how to invoke popup with method documentation in this phase. Instead you will see documentation popups related to arguments which you will type into the method argument list. The only way to display method documentation again is to place the cursor back at the method name and press Ctrl+Space.
When you start writing a method name, popup with method signatures will emerge. When you select one of proposed method signatures by pressing Enter, Netbeans will autocomplete method name as well as its arguments. You find this uncomfortable, because names of autocompleted arguments are usually wrong. You can however easily navigate between autocompleted arguments using Tab and Shift+Tab and overwrite them as you like. Alternatively, you can use Tab instead of Enter when selecting method from method signatures popup. This way Netbeans will autocomplete only the name of the function, not its arguments.
Described Netbeans behavior applies to editing PHP code, and may differ slightly for other languages.
How to trigger a popup with documentation for identifier under the cursor?
Normally it appears when hovering the identifier using the mouse pointer:
I would like to achieve this effect using a command or keyboard shortcut.
The only related commands I found are: trigger completion (which doesn't show the function doc) and trigger parameters hint (which only works when the cursor is inside function call - parameters list).
This is the editor.action.showHover command. It is bound to cmdk cmdi by default.
Note: Shortcut works by holding down the cmd [ctrl in windows], then while holding press k then i
You can change the keyboard shortcut with a keybinding such as:
{
"key": "cmd+k ctrl+space",
"command": "editor.action.showHover",
"when": "editorTextFocus"
}
The default shortcut for Trigger Parameter Hints is Ctrl+Shift+Space
You also have, with VSCode 1.40 (Oct. 2019):
Definition Preview Hover from the keyboard
There is a new command Show Definition Preview Hover for better accessibility of the definition preview hover widget, which can be triggered by hovering a symbol with the mouse and pressing a modifier key dependent on the platform and configuration.
Previously, only the command Show Hover was provided, which is equivalent to hovering the mouse cursor over a symbol.
Now, with Show Definition Preview Hover, the detailed hover information can be shown via the keyboard.
To make this more graphic, check these steps:
In Visual Studio 2019 for Mac, I couldn't find anything about "hover" in the Key Bindings setting. The relevant command seems to be called "Show quick info" and is bound by default to Cmd + F1.
I know this question is about VSCode but I could only find this question when trying to search for an answer. Therefore I would also like to leave the information here in case somebody finds it useful.
There are multiple ways to trigger the documentation popup:
First: Using shortcut ctrl + space
Second: Using vscode extension:
Here is the documentation:
Each answer here demonstrates a different function. Below is a consolidation of every type of helpful popup, the context in which they come up and all the ways I know to trigger them.
These assume default settings.
Function: Display documentation
Shortcut: Ctrlk Ctrli
Scope: Works over named elements - variable and function names (does nothing over literals).
Can display function documentation:
or variable or even property information:
This is the same pop-up you get when you hover over the element briefly.
Function: Display parameter hints.
Shortcut: CtrlShiftSpace
Scope: Works inside a function call.
The cursor must be inside the parenthesis that contain the passed arguments. Does nothing outside that scope.
Can also be triggered by typing a comma, as if passing another argument.
Up/Down arrows can be used to cycle through overloaded definitions (instead of moving the cursor up and down the document).
Function: Display the code completion menu
Shortcut: CtrlSpace
Scope: Anywhere. Will adapt to the context. In strings will display words only. In code will offer symbol hints - function names, variable names within the current scope, known properties, etc.
Is case insensitive.
Matches all contained characters - they do not have to be consecutive (see image above).
Tab or Enter accepts the currently selected suggestion.
Symbol hints can be triggered by just typing letters. Inside strings you must use the keyboard shortcut.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
How do you retrieve the selected text in MATLAB?
I want to implement and add some features to the function "Evaluate Selections", where you can highlight code and then "Evaluate Selections" by right click your mouse (or F9).
In the editor environment, this is how it is done:
editorObject = matlab.desktop.editor.getActive;
eval([editorObject.SelectedText ';']);
How can I implement this from the command line window, or the help window?
EDIT:
Maybe I didn't express my question clearly.
Imagining that we already have this function called eva_select(), I can use function this way:
I wrap the function as the Shortcuts button.
Use mouse to select a variable at command line window, maybe I entered before, say var_a
Then I click that Shortcuts button, the text which I selected before will be executed. This is exactly as press F9 key or choose right mouse menu -- "Evaluate Selections".
But if we really have that function, we can do more! We can modified eva_select() to eva_select_size(), in this way, we can select a variable, say var_a at command line window or help window, click eva_select_size() shortcuts button, then, we will get size(var_a) at command line window!
EDIT:
Thanks, I can retrieve the text in the command window, but I can't do the same thing in the help window, is it possible to do that?
The command window, like other GUI components in the MATLAB desktop, is Java-based. Therefore it can be accessed programmatically, but it is completely undocumented and its use is not officially supported.
Exploring around, here is a solution that seems to work in both R2012a and R2012b. It involves obtaining a handle to the underlying JTextArea of the command window, which is used to get the selected text (to evaluate size of selected variable name)
Create a shortcut with the following code:
x = com.mathworks.mde.cmdwin.XCmdWndView.getInstance();
s = char(x.getSelectedText());
if isvarname(s) && exist(s,'var')
eval( sprintf('size(%s)',s) );
end
Next highlight a variable name in the command window and execute the shortcut. The size will be immediately printed as shown in the screenshot below:
It is not very nice as it is an external solution, but this is how it could work:
Assuming you are in the command window and want to evaluate size(var_a) by selecting it, you can probably do this with a keyboard macro. Defind the appropriate function of var_a
f(x) = eval('size(' x ')'
%This could be done in the macro, but nicer to do it here for easy editing.
Then make sure your macro does this:
Copy 'var_a'
Turn it into 'f(var_a)'
Paste the result
Hit enter
Like i said, it's not pretty, but it should do the trick.
When we're using ctags in vim and want to go to particular definition of variable or function we press ctrl + ], when we want to go back we press ctrl + T.
When we want to autocomplete a name of a variable we press ctrl + N and from a little violet window we can choose the right word.
Is it possible to improve go to definition so that we won't jump in the document, but only the little window with the function or variable definition will appear?
thank you
You want a way to see the function's signature without actually jumping to its definition?
I know about two plugins supposed to provide exactly this feature:
EchoFunc,
Tag Signature Balloons
The last time I tried echofunc it didn't work for JavaScript, at least for me, but it worked well for the few PHP files I've tested it with. I didn't try the other one because it's GVim-only and I use the CLI version almost as often as the GUI version.
But you can also use TagList and/or TagBar: two very useful plugins providing great code navigation based on ctags. Both will display the signature of the tag under your cursor if you hit <Space>.