I realize that this is technically a formatting rather than programming question, but it's inter-related to an understanding of both SQL and RStudio, so I feel it's still appropriate.
I have a script written in Microsoft SQL Server Management Studio that is very intricately formatted for ease of viewing. For example:
SELECT (
CASE WHEN Variable in (1,2)
THEN 1
ELSE 2
END
)
However, when I paste this into RStudio, it becomes something like:
SELECT (
CASE WHEN Variable in (1,2)
THEN 1
ELSE 2
END
)
It maintains a tab when preceded by an open parenthesis, but nothing else. I can manipulate the size of the tabs it does keep, but no matter what options I use in Tools>GlobalOptions>CodeEditing, I can't keep any other formatting. It doesn't look like a big deal from the above example, but my code consists of multiple nested queries and becomes very confusing without the formatting. Any advice is appreciated!
I finally figured this out after asking the question, but I thought other people might have the same question, so I want to share the answer.
There's another option within Tools>GlobalOptions>CodeEditing that says "Auto-indent code after paste" that is checked as default. Apparently, it strips all your formatting AND adds its own tabs. Unchecking it fixed the problem.
Related
I'm converting a Foxpro app and I'm having a bit of trouble with database table referencing/selection. I'm not in a position to run the Foxpro code as I only have code dumps with which to work. If someone could help me understand what is happening here I'd be most grateful. Yes... I searched.
SELECT tblMyTable
Set Filter To Inlist(cbid,123)
SELECT tblMyTable
Does the second Select simply reselect tblMyTable and clear the filter?
If not is a second instance being opened so you have one that’s filtered and one that isn’t?
If so how do I reference each instance since they have no names? Automatically 1 and 2?
Lastly if I’ve got it completely wrong just give me a small clue and I’m on it. Thank you!
I see that you are being misguided.
Second select has no special meaning. That line is not needed at all, but wouldn't do an harm either.
If it were a view, then 'refreshing' a view is done by using Requery(), not by doing another 1 or more selects.
In fact, 'set filter' is on the list of (almost all VFP developers') "never to use commands" , exceptions like this might happen unfortunately.
If you are doing a conversion by only using code dumps and no VFP environment at all, then your task should be extremely hard. I would instead prefer a rewrite from scratch. That would be faster even for seasoned VFP developers.
One thing that constantly annoys me about VS is that when I do a Find or Find all, it looks in comments, strings, and other places. When I'm trying to find a particular bit of code, like and rent, it finds it all over. Is there a way to limit searches just to code?
Not sure if there is a specific setting to ignore comments, but you could do a regex find. For example, assuming you want to find "text", you could use this:
^(?!\s*?//).*?text
Caveats:
Assumes comments start with // as first non-whitespace characters. E.g. C# comment types
Doesn't work for comments at the end of code lines (only comments on their own lines)
Doesn't work with block comments, for example /* comment */
So overall it isn't perfect by any means, but depending how many hits you are getting, it might help to cut them down which can be useful if you have a lot of false positives in one-liner comments
The 'Find All References' function may suit you : it ignores all commented-out code and text in strings. CTRL+K, R is the keyboard shortcut.
(Note that it's designed for going from a specific instance of a search string to all other instances. so if you haven't already found an instance of what you're searching for, you would have to (temporarily) type one in to the editor window, then search. Also it's not available for all languages : I know it works fine for C#, though.)
Is there a way to create links or anchors within SPSS syntax? Something like linking to a bookmark.
I am making changes and additions to a syntax file, and document these changes at the bottom of the file as comments. In these comments I would like to link to the part of the syntax that was changed. Now I just write the line number, but that changes as I add more syntax, so the reference becomes incorrect.
Bookmarks were the closest thing I found to what I want to do, but I can't turn them into a link. Moreover, I can only create a maximum of 9 bookmarks, which is not enough.
Trying to think creatively here:
instead of bookmarking all the changes, you could break up your syntax into many small syntaxes - each of which contains one of the parts where a change was made.
you can name and number the small syntaxes accordingly.
Then you create one syntax which contains a series of INSERT commands, which calls each of the small syntaxes in turn. You can add titles and remarks between the insert commands, so other users can follow the process and study the relevant small syntax that they need separately.
The Statistics Syntax Editor supports bookmarks - you can have up to 10. Generate a few in the SE and save the syntax file to see how these are represented (hint: look at the COMMENT BOOKMARK lines.
While programming I often realize that I need to add something before already typed code. For example I type the name of the variable:
input[0]
and then I realize that my array is of type string and I need to convert it. So, I move to the beginning of the word (with Ctrl-Left Arrow) and start typing
Convert.To|input[0]
with pipe used to show the position of my cursor. I get some suggestions from Intellisense, including the ToInt32() method I am looking for. But as long as I confirm this suggestion with Tab or Space, I get the following:
Convert.ToInt32(|)[0]
So, the text from the cursor position to the end of the word is substituted with suggestion, and this is definitely not what I want.
This problem is not specific for VS 2012 and might be due to some extensions I have installed, but my attempt to pursue its origin did not yield anything. I have following extensions installed: ReSharper, PowerCommands, Productivity Power Tools.
If you are entering an unrelated expression before an identifier, add a space before you start typing the new expression. This will prevent the completion from replacing the existing identifier.
For example, if | marks the caret, the following scenario would avoid the problem you are facing.
Convert.To| input
This code completion feature is designed to prevent the insertion of incorrect identifiers. If Visual Studio behaved like some other IDEs I know of, using the code completion feature in your original example would result in the insertion of ToInt32input, which would never be valid.
If you are interested in additional thoughts regarding this feature in general, I have described this as the Extend (default for Visual Studio) and No-extend (default for NetBeans, Eclipse, and others) modes in my blog article Code Completion filtering, selection, and replacement algorithms.
A two years later answer. But it might still be useful for some.
What helped for me in VS2015 (which might also work in VS2012) is to add the a space character to the list of 'Member List Commit Characters' in the Intellisense settings.
After this the characters after the cursor are not removed by an auto-completion.
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I heard it takes 30 days minimum to get comfortable with vi. I'm on day 2 hehe. Right now, I seem to be merely memorizing different shortcuts for things I already did in Visual Studio (incremental search, prev/next word, etc.).
So far the most powerful aspect seems to be the numeric keys combined with commands (5 * next line), and the idea of normal/insert modes.
There are a few things I miss from Visual Studio. Ctrl-Click'ing the mouse for quick copy and pasting is probably the biggest.
So that I don't get discouraged, can you guys walk me through some things in vi that you do regularly that can't be done in Visual Studio? It'll help me focus on what to learn and help me develop better habits.
I'll just leave a link to this SO answer here.
VI means never ever having to take you fingers off the keyboard.
Note that I don't use Visual Studio, and know little about the available features in it. The following are examples of what I find useful in Vim, not a list of missing features in Visual Studio.
Macros
It's easy to create macros for complex (but repetitive) operations. To illustrate with a simple example, let's say we start with:
Line1
Line2
Line3
Line4
Line5
Now we want to envelop each line in a print(""); statement.
Place the cursor on the first line, and enter:
qx to start recording a macro to the register x
Shift+I print(" Esc to insert text at the beginning of the line
Shift+A "); Esc to append text at the end of the line
j to go down one line
q to stop recording the macro
4#x to execute the macro in register x 4 times
See :help complex-repeat for more info on Vim macros.
Text objects
Note that this is one of the improvements Vim has over the traditional Vi. If it doesn't work, you're probably running in Vi compatibility mode; use :set nocompatible to enable the full functionality of Vim.
Text objects allow you to easily select regions of text. Let's say we start with the following text, and place the cursor on some text:
<b><i>some text</i></b>
Now we want to delete everything between <i> and </i>. This can be done by simply typing the command dit (d'elete i'nner t'ag)! Or if we want to include the tags themselves in our selection, use dat (d'elete a t'ag). To delete everything inside the <b> tags, use d2it (d'elete two i'nner t'ags).
You can similarly use daw (delete a word), dap (delete a paragraph), di" (delete inside double-quotes), etc; see :help text-objects for the complete list.
Another useful example of text objects:
v2ap"+y
v toggles visual mode. This makes it easier to see what you're selecting, and lets you adjust your selection with a series of multiple motions before you execute a command.
2ap selects this paragraph and the next one
"+ selects the system clipboard as register for the next operation
y yanks the selection to the given register
In other words, that command would copy two paragraphs from your text to the system clipboard (e.g. for pasting them here at StackOverflow).
Global editing
The global command is used to apply an Ex command to all lines matching a given regular expression. Examples:
:global/test/print or :g/test/p would print all lines containing the phrase test
:global/test/delete or :g/test/d would delete said lines
:global/test/substitute/^/#/ or :g/test/s/^/#/ would search for lines containing the phrase test, and comment them out by substituting the regexp anchor ^ (beginning-of-line) with the symbol #.
You can also do some cool stuff by passing the search motions /pattern or ?pattern as ranges:
:?test?move . searches backwards for a line containing test, and moves it to your current position in the file
:/test/copy . searches forwards for a line containing test, and copies it to the current position in the file
Good luck and have fun learning Vim!
Edit a file on a Solaris machine that only allows SSH access.
This article is what got me started on Vim, and I never looked back:
http://www.viemu.com/a-why-vi-vim.html
It has some great examples on Vim's power.
Use screen to keep a session running on a remote machine accessed over ssh
Visual Studio's regular expressions are a little bit Mickey Mouse. Vim has the full POSIX regular expression language at your fingertips.
As far as I can tell (in Visual C# express 2010) ctrl-click just selects whatever word you click on. To do the same in VIM, you can combine the yank command with a movement command.
So you press "y" for yank (copy) then "e" or "w" to copy to the end of the word.
There is many differences.
Block (and column) wise copy, paste, edit
the dot command! (after duck tape the second most powerful tool on the planet, seriously)
I suggest you watch some screencasts at http://vimcasts.org/ to get a feeling of the power of vim.
e.g.:
http://vimcasts.org/episodes/creating-the-vimcasts-logo-as-ascii-art/
http://vimcasts.org/episodes/selecting-columns-with-visual-block-mode/
You could always use the Vim emulator/add-on for Visual Studio and get some of the power of vim mixed with the features of VS. If you're already using Visual Studio, I assume you're using a .NET language, which without VS, would be much more painful to use.
Vim Essentials is a nice set of slides.
Personally, I got used to vi a long time ago, when we didn't have the luxury of a mouse in student's Unix terminals. Since then, I used vi/vim for everything safe for writing emails.
To this day, I probably use only 1/20 of the commands, but never felt the need to write code with another text editor, and reaching for a mouse in an IDE feels very clumsy to me.
Using high level and expressive languages, that do not require an IDE (mainly python, sql, javascript) really helps. I suppose it wouldn't be as easy with Java or C++.
Not having to move and point with the mouse when coding (safe for using the browser) also helps preventing Carpal tunnel syndrome.
BTW, I suppose Vim integrates better with Unix than with Windows... and who said 30 minutes was a little optimistic :)
Edit documents over SSH. Vim's really nice for that.
Edit: looks like a lot of people have already said that :)
teco is your answer. You only need a PDP-10 and an ASR-33 and you're on your way!