Anonymous function assignement in CoffeeScript - coffeescript

I'm struggling to make the following code work:
class Elements
constructor: ->
loadAll: ->
success = (data) =>
doSomething
doSomethingElse
$.post bla success
It thinks everything after doSomething is not part of the success callback body.
Edit: I didn't realise CS was space/tab sensitive. TextMate doesn't help with it; Is there a better IDE for CS?


TextMate is probably the best editor for CoffeeScript, with a bundle maintained by CoffeeScript creator Jeremy Ashkenas. (The bundle is also compatible with Sublime Text 2, which is a nice cross-platform alternative.) The solution here is to:
Convert all tabs to spaces in your existing files (as Jeremy suggested in his comment), and
Switch to Soft Tabs using this switcher at the bottom of the window:
That way, when you hit the Tab key, the number of specified spaces is inserted. By avoiding the use of actual tab characters, you avoid the inevitable confusion that results from n spaces looking the same to a human as 1 tab, but being ambiguous to the compiler.
The norm in the CoffeeScript community is 2 spaces, but there are plenty of folks using 4 spaces (which is the official standard in Python-land); just pick one and stick with it.
If you do decide to make the switch to Sublime Text 2, you can add these lines to your Base File.sublime-settings preferences file to force soft tabs with the given number of spaces:
"tab_size": 2,
"translate_tabs_to_spaces": true,
In sum: Hard tabs and languages with significant whitespace don't mix. Configure your editor to use soft tabs, and CoffeeScript responsibly. :)

Related

Make spaces act and look like tabs in VS Code

When writing a source file in VS Code that is styled with spaces of a specific width (maybe determined by the .editorconfig file), how can I force VS Code to treat the spaces like tabs without reformatting the file?
For example, the indent width may be 4 spaces, so rather than displaying 4 spaces in my editor, I'd rather see one tab space character with a width of 4 spaces.

The selection aspect of space-tabulated code is supported with VSCode 1.52 (Nov. 2020) and:
Sticky Tab Stops when indenting with Spaces
If you prefer to indent your code with spaces, there is a new setting called editor.stickyTabStops, which makes VS Code treat cursor movements in leading spaces similar to tabs.

Appearance
You said vscode is:
displaying 4 spaces in my editor
I assume that means you're getting those little Interpunct dot characters coming up like this ····
If you want those to go away, so they appear more consistent with tabs, go into VScode settings (JSON) and enter the following:
"editor.renderWhitespace": "selection"
Assuming everything else is default, both tabs and spaces should be rendered as regular whitespace. But that alone it doesn't really help, because it doesn't allow you to distinguish nested structures i.e. you can't tell how many levels of indentation you're at.
To fix that, there's 2 things.
(minimum) Set indent guides explicitly in your user settings, this will render vertical lines at each indentation level, no matter if the file is using tabs or spaces:
"editor.renderIndentGuides": true
(optional extra) If you want to take it further, there are a few extensions you can try, but the one i recommend is indent-rainbow. There are lots of options for it, but i have mine config'd so after a certain level of indentation it becomes more obnoxious, because i treat it as a code smell i.e. i like to minimize how much i nest if possible.
The end result of doing all this is that tabs and spaces are rendered exactly the same way, and you can't tell the difference unless you have part of your code highlighted:

Behavior
To make the behavior of indentation more consistent, the following should be in your settings if it's not already applied by default:
"editor.detectIndentation": true,
"editor.insertSpaces": true,
"editor.useTabStops": true
As for this:
source file in VS Code that is styled with spaces of a specific width (maybe determined by the .editorconfig file)
I don't think this is possible, or at least not natively. You may be able to find/write an extension that can do detection based on tabsize since there is in fact a property called:
"editor.tabSize": 4,
Not sure if this will help, but you can do selective setting overrides based on filetype, for example:
"[yaml]": {
"editor.insertSpaces": true,
"editor.tabSize": 2,
"editor.autoIndent": "advanced"
}

Automatically hard wrap lines at column in VSCode

How can I automatically hard wrap lines in VSCode? By that I mean if a line reaches a specified column, automatically insert a newline at the word boundary closest to that column without going over. Vim has a setting called textwidth that does this that I like to use when editing Markdown. It doesn't seem like VSCode does, as far as I can tell. It just has ways to control softwrapping.

VSCode doesn't support this out of the box. But you can install the Rewrap extension, which allows you to format the block that your cursor is currently in by pressing Alt + Q.
Rewrap requires no further settings, since it reads VSCode's settings to obtain the column at which to break.
Rewrap also supports automatic wrapping (off by default): https://github.com/stkb/Rewrap/wiki/Auto-wrap

Unfortunately, VSCode doesn't have this feature yet. But, we still can make it to be as close as vim automatic word wrapping beautiful feature.
First Step
We need to setup soft word wrap feature in VSCode.
Open VSCode Settings via Code => Preferences => Settings.
Add these 3 lines of editor settings.
"editor.wordWrap": "wordWrapColumn",
"editor.wrappingIndent": "same",
"editor.wordWrapColumn": n
Don't forget to change (n) with your preferred length of columns line. For me, I feel more comfortable to set it to 60.
Save this setting.
The main purpose of this first step is to make us feel more comfortable when we're typing because we don't need to manually type Enter and see a long line of text.
Second Step
We need to install Vim emulation for VSCode and set vim textwidth.
Install Vim emulation via VSCode extensions.
Open VSCode Settings via Code => Preferences => Settings.
Add this line of vim setting.
"vim.textwidth": n,
Don't forget to change (n) with your preferred length of columns line. For me, I will set this to be the same with (n) in the first step.
Save this setting.
Actual Use
When you finish to write your whole document, you can format it to be hard wrap lines using this way.
Block all text using visual line mode (Shift + v)
Type 'gq'

Now VSCode support auto "soft" wrapping out of the box.
Settings --> Text Editor --> Last 3 options (as on today) is for autowrapping.
Word Wrap (Controls how lines should wrap)
Word Wrap Column (Controls the wrapping column of the editor)
Wrapping indent (Controls the indentation of wrapped lines)
By default Word Wrap is off.

As of 2020 and if you're using the Prettier - Code formatter plugin:
Go to Plugins -> Find Prettier -> Cog -> Extension Settings -> Prettier: Print Width Fit code within this line limit and set to whatever you want. By default it's 80.
When you save the file, Prettier will format automatically.

Hard Wrap Comments
Use the Rewrap extension.
Soft Wrap Code
Add the following setting (replace column width with your preference): "editor.wordWrapColumn": 100
Then add either "editor.wordWrap": "wordWrapColumn" (wraps at the column) or "editor.wordWrap": "bounded" (wraps at either the column or the viewport).
Hard Wrap Comments and Soft Wrap Code
Unfortunately the extension and VSCode settings do not play nicely.
Feel free to upvote this feature request.

There is currently an Open request for this in the VS Code Issue tracker on GitHub, You Can Find It Here

Most of these didn’t work for me, but I found the extension Vsctoix, which does.
We start out with line breaks at column 80:
Mechanisms such as a “windfall clause” help distribute riches within particular
futures. But for a windfall clause to be useful, many conjunctive assumptions
have to be true. We present a new method to borrow against potential future
windfalls today, when they have greater marginal use. The method also increases
the probability and thus the expected value of the windfalls.
Then we execute “IX: Join Lines” (no parameter):
Mechanisms such as a “windfall clause” help distribute riches within particular futures. But for a windfall clause to be useful, many conjunctive assumptions have to be true. We present a new method to borrow against potential future windfalls today, when they have greater marginal use. The method also increases the probability and thus the expected value of the windfalls.
And then “IX: Break Line At” with parameter 100:
Mechanisms such as a “windfall clause” help distribute riches within particular futures. But for a
windfall clause to be useful, many conjunctive assumptions have to be true. We present a new method
to borrow against potential future windfalls today, when they have greater marginal use. The method
also increases the probability and thus the expected value of the windfalls.
It would be neat if it respected paragraph breaks and did both steps at once, but so far it’s the only extension that works for me – except I haven’t tried the vim emulation yet.

You can do this without any extension. You just use two regex search-and-replace.
Isolate the lines you want to rewrap by moving them to a separate file.
Join all the lines into one line. For example, ctrl+h, "\n" ==> " ". Note: make sure regex is enabled (the dot star icon)
Split the line into multiple lines. For example, ctrl+h, "(.{100}) " ==> "$1\n". Notice the space after the paren.
Copy the lines back to the original file.
There are many variations on this technique. For example, you could using comma instead of space "(.{100})," ==> "$1,\n". You could use Find in Selection alt+L instead of using a temp file.

Edit: (below answer might be for a soft wrap, see here for difference between soft and hard wrap: https://stackoverflow.com/a/319932/9481613)
In my version it is Preferences -> Settings then scroll down to "Editor: Word Wrap" where a dropdown box is available from which I selected wordWrapColumn. After choosing this and closing, when I click on View now at the bottom it says Word Wrap Alt+Z.

If anyone is running having issues, accessibility support/screen reader may need to be disabled. Go to preferences >> text editor >> accessibility support and toggle it off.

You can easily set the column limit using ColumnLimit member in C_Cpp.clang_format_fallbackStyle in settings.json (You have to install Microsoft C/C++ extension)
"C_Cpp.clang_format_fallbackStyle": "{ BasedOnStyle: WebKit, IndentWidth: 4, ColumnLimit: 80 }",
Then you can format the file using Shift + Alt + F
There are many options you can change in this format feature
"C_Cpp.clang_format_fallbackStyle": "{ BasedOnStyle: WebKit, UseTab: Never, IndentWidth: 4, TabWidth: 4, BreakBeforeBraces: Attach, AllowShortIfStatementsOnASingleLine: false, IndentCaseLabels: false, ColumnLimit: 80, AccessModifierOffset: -4 }",
Name of the predefined style used as a fallback in case clang-format
is invoked with style file but the .clang-format file is not found.
Possible values are Visual Studio, LLVM, Google, Chromium, Mozilla,
WebKit, Microsoft, GNU, none, or use {key: value, ...} to set specific
parameters. For example, the Visual Studio style is similar to: {
BasedOnStyle: LLVM, UseTab: Never, IndentWidth: 4, TabWidth: 4,
BreakBeforeBraces: Allman, AllowShortIfStatementsOnASingleLine: false,
IndentCaseLabels: false, ColumnLimit: 0, AccessModifierOffset: -4,
NamespaceIndentation: All, FixNamespaceComments: false }
Before
void Proc::Memory::getSramOff(const char* mem_name, uint dataSize, uint addrBits, uint& noOfBytes, uint& sram_off)
After
void Proc::Memory::getSramOff(const char* mem_name, uint dataSize,
uint addrBits, uint& noOfBytes, uint& sram_off)

Shortcut for "code block" macro in Confluence editor

We use confluence for documentaion but i find very time consuming to select the code macro; it's a 5 step process. Even typing the macro by hand is not efficient.
In the Stack Overflow editor all we have to do is select the text and press a button or hit ctrlK, and the text is formatted as code.
Is there a way to do this in Confluence?

even typing by hand is also not efficient
I use the code macro extensively and always use the autocomplete feature by typing { and choosing 'Code Macro' from the list (It's enough to type co for the code macro).
This is a very efficient.
Of course a keyboard shortcut would be faster, but there is no shortcut for the code macro. (AFAIK there is no keyboard shortcut for a specific macro at all)

I use Ctrl-Shift-D then wrap the text in {code}.
This also fixes the problem with formatting being stripped from pasted text.
In Confluence 5.x if you edit a page, you can type {cod<enter} and it puts a Code Block box on the page, but when code is pasted into this box it can strip out end of line characters.
Open the Insert Markup window using Ctrl-Shift-D
Paste in your code as plain text This way the formatting is not stripped out.
Add {code} tags.

You can also type three back ticks ``` to create a code block as you would in vanilla Markdown. This creates an empty code block very quickly. I never have with problems with formatting when pasting code in this way.
The one irritating feature of this method is that you can't specify the language as you do in Markdown, you have to select the language from a list.

ignore differences in syntax in beyondcompare

In a branch of code I have changed all of the code from obj.varname to obj("varname") and when I compare the code I would like to ignore these differences since varname is the same.
I have a regular expression that I think I need but unfortunately can't get the comparison to be ignored using Beyond Compare from Scooter
^obj\("\w*"\)|obj\.\w*$
I am following this tutorial http://www.scootersoftware.com/support.php?zz=kb_unimportantv3
So my question: is this even possible with beyond compare? If yes, please share a solution including either instructions or post your screenshots.

Beyond Compare 3's Professional edition supports this through its Text Replacements feature. If you've already purchased a Standard edition license you need to revert to trial mode to test it: http://www.scootersoftware.com/suppo...?zz=kb_evalpro
Load your two files in the Text Compare.
Open the Session Settings dialog from the the Session menu, and on the Replacements tab click New to create a new replacement.
In the Text to find edit, use (\w+)\.(\w+)
In the Replace with edit, use $1("$2")
Check the Regular expression checkbox.
The alternative would be to mark any instance of obj.varname and obj("varname") as unimportant. The basic steps would be this:
Load your two files in the Text Compare.
Open the Session Settings dialog from the Session menu, and on the Importance tab click the Edit Grammar... button.
In the next dialog click the New... button below the top listbox.
Change the Element name field to something useful (say, "PropertyAccess").
Change the Category* to List.
In the Text in list* edit, add these two lines:
obj.varname
obj("varname")
Click OK to close the Grammar Item dialog and then click OK again to close the Text Format* grammar item.
Uncheck "PropertyAccess" (or whatever you named it) in the Grammar elements listbox in the Session Settings dialog, then click OK to close it.
This approach isn't as flexible or clean. In the steps above you're matching specific, hardcoded object and variable names, so obj.varname is unimportant but obj.othervar isn't, even if it's aligned against obj("othervar"). If text on both sides is unimportant the difference will be unimportant; if one side is important it will be an important difference. So, with the above steps, obj.varname and obj("varname") will be unimportant everywhere, but it will work correctly since they'll either be matched to other cases that also match those definitions (and thus unimportant) or will be matched to something else that doesn't match that definition, which will be important and will make the difference important.
You can use regular expressions to match more general text categories, but you probably don't want to. For example, if you wanted to match all text that followed that pattern you could use these two lines instead:
\w+\.\w+
\w+\("\w+"\)
And then check the Regular expressions checkbox in the Grammar Item dialog so they're matched that way.
The upside/downside to that is that any text that matches those patterns is then unimportant. abc.newvar vs. def.varname would be considered an unimportant difference because both sides match the unimportant definition. That's good for things like comments or whitespace changes, but probably isn't what you want to do here.

How do you display code snippets in MS Word preserving format and syntax highlighting?

Does anyone know a way to display code in Microsoft Word documents that preserves coloring and formatting? Preferably, the method would also be unobtrusive and easy to update.
I have tried to include code as regular text which looks awful and gets in the way when editing regular text. I have also tried inserting objects, a WordPad document and Text Box, into the document then putting the code inside those objects. The code looks much better and is easier to avoid while editing the rest of the text. However, these objects can only span one page which makes editing a nightmare when several pages of code need to be added.
Lastly, I know that there are much better editors/formats that have no problem handling this but I am stuck working with MS word.

Here is the best way, for me, to add code inside word:
Go to Insert tab, Text section, click Object button (it's on the right)
Choose OpenDocument Text which will open a new embedded word document
Copy and paste your code from Visual Studio / Eclipse inside this embedded word page
Save and close
Advantages
The result looks very nice. Here are the advantages of this method:
The code keeps its original layout and colors
The code is separated from the rest of the document, as if it was a picture or a chart
Spelling errors won't be highlighted in the code (this is cool !)
And it takes only few seconds.

Download and install Notepad++ and do the following:
Paste your code in the window;
Select the programming language from the language menu;
Select the text to copy;
Right click and select Plugin commands -> Copy Text with Syntax Highlighting;
Paste it into MS Word and you are good to go!
Update 29/06/2013:
Notepad++ has a plugin called "NppExport" (comes pre-installed) that allows you to copy to RTF, HTML and ALL. It permits dozens of languages, whereas the aforementioned IDEs are limited to a handful each (without other plug-ins).
I use Copy all formats to clipboard and "paste as HTML" in MS word.

After reading a lot of related answers, I came across my own solution, which for me is the most suitable one.
Result looks like this:
As you can see, it is the same syntax highlighting like on Stack Overflow which is quite awesome.
Steps to reproduce:
on Stack Overflow
Goto Ask Question (preferably with Chrome)
Paste Code and add a language tag (e.g. Java) to get syntax hightlighting
Copy code from preview
in Word
Insert > Table > 1x1
Paste code (you may need to use Paste Special... > Formatted Text (RTF) from the Edit menu to not lose the syntax hilighting)
Table Design > Borders > No Border
Select code > Edit > Find > Replace
Search Document ^p (Paragraph Mark)
Replace With ^l (Manual Line Break)
(This is required to remove the gaps between some lines)
Select code again > Review > Language > check "Do not check spelling or grammar"
Finally add a caption using References > Insert Caption > New Label > name it "Listing" or sth
Sample code thanks to this guy

There is a nice Online Tool for that : https://www.troye.io/planetb/
Just copy the generated code and paste it into your word editing software. So far I've tried it on MS Word and WPS Writer, works really well.
Doesn't play nice with Firefox but works just fine on Chrome (and IE too, but who wants to use that).
One of the main benefits is that, unlike the Code Format Add-In for Word, it does NOT mess with your code, and respects various languages' syntax.
I tried many other options offered in other answers but I found this one to be the most efficient (quick and really effective).
There is also another online tool quoted in another answer (markup.su) but I find the planetB output more elegant (although less versatile).
Input :
Output :

I type my code in Visual Studio, and then copy-paste into word. it preserves the colors.

When I've done this, I've made extensive use of styles. It helps a lot.
What I do is create a paragraph style (perhaps called "Code Example" or something like that) which uses a monospaced font, carefully chosen tabs, a very light grey background, a thin black border above and below (that helps visibility a lot) and with spelling turned off. I also make sure that inter-line and inter-paragraph spacing are set right. I then create additional character styles on top (e.g., "Comment", "String", "Keyword", "Function Name Decl", "Variable Name Decl") which I layer on top; those set the color and whether the text is bold/italic. It's then pretty simple to go through and mark up a pasted example as being code and have it come out looking really good, and this is works well for short snippets. Long chunks of code probably should not normally be in something that's going to go on a dead tree. :-)
An advantage of doing it this way is that it is easy to adapt to whatever code you're doing; you don't have to rely on some IDE to figure out whatever is going on for you. (The main problem? Printed pages typically aren't as wide as editor windows so wrapping will suck...)

Maybe this is overly simple, but have you tried pasting in your code and setting the font on it to Courier New?

Try defining a style called 'code' and make it use a small fixed width font, it should look better then.
Use CTRL+SPACEBAR to reset style.

If you are using Sublime Text, you can copy the code from Sublime to MS Word preserving the syntax highlighting.
Install the package called SublimeHighlight.
In Sublime, using your cursor, select the code you want to copy, right click it, select 'copy as rtf', and paste into MS Word.

I'm using Easy Code Formatter. It's also an Office add-in. It allows you to select the coding style / and has a quick formatting button. Pretty neat.

In case you're like me and are too lazy or in a hurry and don't want to download additional software, you can use http://markup.su/highlighter/. It's very straight forward and supports several highlight themes and many programming languages. In my case I was using Visual Studio Code, which doesn't allow copying with format due to CSS involved in styling (as reported here).
Copy the text from the Preview box and then in Word go to Insert -> Textbox, paste the Preview from the website, highlight all the text, and then disable spell checking for that textbox.
This is what the code looks like finally.

The best way I found is by using the table.
Create a table with 1x1. Then copy the code and paste it.
If you're using the desktop app then it will inherit the code editor theme color and paste it accordingly, else you can change the table style to any color.
UPDATE ------------------
From Word 2021, you can directly paste the code and it will preserve the formatting. No need to create the table.
Thank you #RdC1965 for mentioning this.

This is a bit indirect, but it works very nicely. Get LiveWriter and install this plugin:
http://lvildosola.blogspot.com/2007/02/code-snippet-plugin-for-windows-live.html
Insert your code using the plugin into a blog post. Select all and copy it to Word.
It looks great and can include line numbers. It also spans pages decently.
HTH
Colby Africa

Vim has a nifty feature that converts code to HTML format preserving syntax highlighting, font style, background color and even line numbers. Run :TOhtml and vim creates a new buffer containing html markup.
Next, open this html file in a web browser and copy/paste whatever it rendered to Word. Vim tips wiki has more information.

In my experience copy-paste from eclipse and Notepad++ works directly with word.
For some reason I had a problem with a file that didn't preserve coloring. I made a new .java file, copy-paste code to that, then copy-paste to word and it worked...
As the other guys said, create a new paragraph style. What I do is use mono-spaced font like courier new, small size close to 8px for fonts, single spaced with no space between paragraphs, make tab stops small (0.5cm,1cm,..,5cm), put a simple line border around the text and disable grammar checks. That way i achieved the line braking of eclipse so I don't have to do anything more.
Hope I helped ;)

This is the simplest approach I follow. Consider I want to paste java code.
I paste the code here so that spaces, tabs and flower brackets are neatly formated http://www.tutorialspoint.com/online_java_formatter.htm
Then I paste the code got from step 1 here so that the colors, fonts are added to the code http://markup.su/highlighter/
Then paste the preview code got from step 2 to the MS word. Finally it will look like this

You can use VS code to keep code format and highlighting. Directly copy and paste code from VS.

you can simply use this Add-in on any office program.
Go to insert tab, then Get Add-ins, and search for Easy Syntax Highlighter
It supports
185 languages and 89 themes.
Automatic language detection.
Multi-language code highlighting.

Use a monospaced font like Lucida Console, which comes with Windows. If you cut/paste from Visual Studio or something that supports syntax highlighting, you can often preserve the colour scheme of the syntax highlighter.

Answer for people trying to resolve this issue in 2019:
Most answers to this question are outdated by now. I wish there was a way to reinspect old questions and answers every now and then!
The method I found for this question that works with Office 365 and its associated programs can be found here.

I'm using Word 2010 and I like copying and paste from a github gist. Just remember to keep source formatting!
I then change the font to DejaVu Sans Mono.
You can opt to copy with or without the numbering.

Copying into Eclipse and paste it in Word is also another option.

You can also use SciTE to paste code if you don't want to install heavy IDEs and then download plugins for all the code you're making. Simply choose your language from the language menu, type your code, high-light code, select Edit->Copy as RTF, paste into Word with formatting (default paste).
SciTE supports the following languages but probably has support for others: Abaqus*, Ada, ANS.1 MIB definition files*, APDL, Assembler (NASM, MASM), Asymptote*, AutoIt*, Avenue*, Batch files (MS-DOS), Baan*, Bash*, BlitzBasic*, Bullant*, C/C++/C#, Clarion, cmake*, conf (Apache), CSound, CSS*, D, diff files*, E-Script*, Eiffel*, Erlang*, Flagship (Clipper / XBase), Flash (ActionScript), Fortran*, Forth*, GAP*, Gettext, Haskell, HTML*, HTML with embedded JavaScript, VBScript, PHP and ASP*, Gui4Cli*, IDL - both MSIDL and XPIDL*, INI, properties* and similar, InnoSetup*, Java*, JavaScript*, LISP*, LOT*, Lout*, Lua*, Make, Matlab*, Metapost*, MMIXAL, MSSQL, nnCron, NSIS*, Objective Caml*, Opal, Octave*, Pascal/Delphi*, Perl, most of it except for some ambiguous cases*, PL/M*, Progress*, PostScript*, POV-Ray*, PowerBasic*, PowerShell*, PureBasic*, Python*, R*, Rebol*, Ruby*, Scheme*, scriptol*, Specman E*, Spice, Smalltalk, SQL and PLSQL, TADS3*, TeX and LaTeX, Tcl/Tk*, VB and VBScript*, Verilog*, VHDL*, XML*, YAML*.

If you are using Intellij IDEA, just copy the code from the IDE and paste it in the word document.

A web site for coloration with lots of languages.
http://hilite.me/
You can host one yourself since it is open source. The code is on github.

There really isn't a clean way to do it, and it could still look fishy based on your exact style settings.
What you could try to do is to first run a code-to-HTML conversion (there are many programs that do that), and then try to open up the HTML file with word, that might hopefully provide you with the formatted and pretty code, and then copy and paste it into your document.

I was also looking for it and ended up creating something for my code display.
Here's a good way:
Create a rectangular form and place your text inside.
Change the font to Consolas and size ~10.
Change the text font to gray near-black (gray 25%, darker 75%)
Use darker colors to highlight your text if needed and choose one to be the contour.

I have created an easier method using tables, as they are easier to create, manage, and more consistent (with the possibility to save the table's style inside the document itself), but I couldn't find a better way for code colouring scheme, sorry for that.
Steps:
Create a 3x3 table.
Select the table, and make its borders invisible ("No Borders" option), and activate "View Gridlines" option.
Make the adjustments to cells' spacing and columns' widths to get the desired aspect. (You will have to get in "Table Properties" for fine tuning).
Create a "Paragraph Style" with the name of "Code" just for your code snippets (as mentioned in https://stackoverflow.com/a/25092977/8533804)
Create another "Paragraph Style" with the name of "Code_numberline" that will be based upon the previous created style, but this you will add a numbering line in its definition (this will automate line numbering).
Apply "Code_numberline" to the first column, and "Code" to the 3 column.
Add a fill in the middle column.
Save that table style and enjoy!

The best presentation for code in documents is in a fixed-width font (as it should appear in an IDE), with either a faint, shaded background or a light border to distinguish the block from other text.

If its Java source code copy it to Visual Studio and then copy it back to Word.