After I am installing a root library, such as npm install aws-amplify, sometimes it seems that I need to install its sub library such as npm install #aws-amplify/cli. Why did not npm install aws-amplify install every sub library within it?
What's the npm packaging and installing rule here? can someone help me clearing understand that?
You are mixing up 2 different syntaxes. The #namespace/package is relatively new. It used to be just package, and some packages still use this. In the old way package tend to name themselves 'namespace-package' as some sort ofworkaround.
But that is not your question. Your question is 'why do they even do this?'.
Why wouldn't you just download all the npm package out there? Then you have and can use everything, right? As you can imagine this doesn't make much sense, you will only want to download and use what you need. Think of this quote from Joe Armstrong:
You wanted a banana but what you got was a gorilla holding the banana and the entire jungle.
The quote is a entirely out of context since it is more about not using classes, but it still kind of applies to this. At lot of packages will offer you a core package and the option to add sub-packages based on your need. Like in your example, someone might not need #aws-amplify/cli, this way he doesn't have to download it.
I am a php developer and have not done much front-end work for 3 or 4 years so I feel its time to update my skill set. I want to install a less compiler and set-up a bootstrap work flow using my Ubuntu desktop. I know how to use the basic pre-compiled bootstrap but I’m kinda lost with all this LESS stuff. I need to use it as I want to shoehorn bootstrap onto an existing application that has all its own css classes in the html output that cant really be changed easily. So Ill need to extend the LESS files to add these classes to the boostrap css.
I am just not sure where to start. Does anybody know of tutorial that will walk me through installing and setting up the LESS complier then how to use it so that I can work in an efficient way. Iv searched but can really find any Ubuntu specific or up to date tuts.
For installing less, you can use lessc:
it is a node.js package which convert less to css, with several options:
http://lesscss.org/#using-less-installation
You need to install npm before
Full installation:
# apt-get install npm
# npm install -g less
And to use, as explained in the doc, just use lessc package.
For me, when I work with less, I use Bracket editor: http://brackets.io/
You can then install an extension which, when you save less file, automaticaly compile less to a css file: https://github.com/jdiehl/brackets-less-autocompile
(you find it with built-in extension manager)
Maybe for others IDE / editor, you have also plugins
I really like the idea of this BundleTransformer plugin from NuGet, and I see that they have LESS support. But ...
After weeks of trying, I cannot find any decent example of how to use it. The documentation is unclear, to say the very least. This is the closest I could find, which does not compile or work.
who-could-ask-for-more-with-less-css
Well, the simple answer is that I could ask for more.
Can someone please assist me with the simple task of creating a bundle that has .less files in it, that will run? I am completely lost.
I would suggest reading the wiki page for bundle transformer and also, as the wiki page suggests, make sure you are familiar with ASP.NET bundling and minification.
If you follow the examples of usage you should be up and running.
I know this is an older post but figured I'd chime in. The Bundle Transformer Codeplex discussion board (Feb 2015) mentions that BundleTransformer is no longer considered a modern client-side build tool and they are recommending you go with Gulp or Grunt - which both have support starting in Visual Studio 2013.3 via VSIX extensions and more baked in to VS2014. FYI -This Scott Hanselman post explains how to get up and going with Grunt and Gulp in Visual Studio. I think if you're using BundleTransformer for simple Less compilation it works fine, but doesn't allow you to do things like generate CSS Sourcemaps which make your browser's dev tools aware of the Less source files, which in my humble opinion is critical for using a CSS preprocessor - the ability to see the LESS line numbers of your source files in the styles pane.
I searched google and i didn't found an IDE that would allow Syntax Checking specifically.
Is there a way to check syntax in VS or other tool?
Even though not free, Webstorm comes with good support for Coffeescript out of the box.
By far the IDE I prefer most developing Coffe/Javascript at the moment.
+1 on vim-coffee-script and syntastic.
Have you checked CoffeeScript's wiki? There are few plugins that add syntax checking:
CoffeeScript plugin for sublime
CoffeeScript for Netbeans
You might be interested in using a command line tool like CoffeeLint, which offers optional validation rules. You can add it to your development process writing your own script to watch for changes in files or using tools like Grunt.
See gVim, and install this plugin for syntax checkong, and this one for syntax coloring.
This is a lightweight, scalable, and cheap option.
If you're OK with using Vim, just add the vim-coffee-script and syntastic plugins
If you're into Emacs, there's an Emacs major mode for CoffeeScript.
Here is the blog post announcing its release.
I'm interested in looking at Erlang and want to follow the path of least resistance in getting up and running.
At present, I'm planning on installing Erlang R12B-3 and Erlide (Eclipse plugin). This is largely a Google-result-based decision. Initially this will be on a Windows XP system, though I am likely to reproduce the environment on Ubuntu shortly after.
Is there a significantly better choice? Even if it is tied to one platform.
Please share your experiences.
I highly recommend the Erlang mode shipped with the standard Erlang distribution. I've put together a "works out of the box" Emacs configuration which includes:
Syntax highlighting & context-sensitive indentation
Dynamic compilation with on-the-fly error highlighting
Integrated Erlang shell
And more....
You can browse my GitHub repo here:
http://github.com/kevsmith/hl-emacs
I've only done a small bit of coding in Erlang but I found the most useful method was just to write the code in a text editor and have a terminal open ready to build my code as I need to (this was in Linux, but a similar idea would work in Windows, I'm sure).
Your question didn't mention it, but if you're looking for a good book on Erlang, try this one by O'Reilly.
You could also try NetBeans there's a very nice Erlang module available: ErlyBird
Install Erlang: sudo aptitude install erlang
Install a recent JDK: sudo aptitute install sun-java6-jdk
Download and install (the smallest) NetBeans edition (e.g. the PHP one): www.netbeans.org/downloads
download the erlang module ErlyBird: sourceforge.net/projects/erlybird
manually install the modules via NetBeans
ErlyBird features:
syntax checking
syntax highlighting
auto-completion
pretty formatter
occurrences mark
brace matching
indentation
code folding
function navigator
go to declaration
project management
Erlang shell console
I'm using Erlang in a few production systems personally as well at the office. For client side testing, documentation and development I use a MacBook Pro as the OS/platform and TextMate with the Erlang bundle as an editor.
For sever side development and deployment we use RHEL 4.x/5.x in production and for editing I use VIM. Personally, I've got 4 machines (slices on slicehost.com) running Debian using Erlang for a few websites and jobs.
I try to go with the smallest 'engineering environment possible', usually the one with the fewest dependencies from apt or yum.
To add to the Emacs suggestions, I would also recommend that you look at the advantages of distel when running the Emacs erlang-mode.
I've seen answers suggesting TextMate here, so I wanted to add another good Mac OSX tool:
ErlangXCode plugin to XCode.
I've been using this since I started with Erlang and really do like it.
The download link on his blog is broken, here's the real download:
http://github.com/JonGretar/erlangxcode/tree/master
You could also try a virtual server on demand service like this one from CohesiveFT
Select the components you want (e.g. erlangrb12 + yaws + MySQL + erlyweb) and it will build a vm image for you to download or to put onto ec2.
Rolling you own locally is quite straightforward too if you follow the instructions in the pragmatic programmers book Programming Erlang
Just a quick note:
The Erlang "compiling" process described in Ciaran's post (described for Ubuntu 6.10 btw) can be easily skipped using apt command in any Debian based distro:
apt-get install erlang
Do not forget to install these packages if you see it fit:
erlang-doc-html - Erlang HTML document pages
erlang-examples - Some application examples
erlang-manpages - Erlang MAN pages
erlang-mode - editing mode for Emacs
Good Luck!
I like Justin's suggestion, but I'll add to it: this solution is great for learning a language. If you don't rely on something like code-completion, then it forces you to learn the language better. (If you are working with something with a huge API, like Java or Cocoa, then you'll want the code completion, however!)
It's also language-agnostic, and in the case of an interpreted language, particularly one that has an interactive interpreter, you'll probably spend just as much time in the shell/interpreter typing in commands. Even in a large-ish python project, I still work in an editor and 4 or 5 terminal windows.
So, the trick is more about getting an editor which works for you. I'm not about to suggest one, as that's heading towards evangelism!
I just use Scite. Type something and press f5 to see the results.
Just wrote a guide on this on my blog, heres the abridged version:
Part 1: Download what needs to be downloaded.
Download and install the Erlang run-time.
Download and install TextPad.
Download a .syn file for Erlang and place it in the system folder of TextPad. For me, this folder was C:\Program Files\TextPad 5\system. I'm not quite sure who did this syn file (the site is in another language), but they did a good enough job.
Part 2: Set up syntax highlighting.
Open up TextPad. Ensure no files are opened. Go to the 'Configure' menu, and select 'Preferences'. In the preferences window, click 'Document Classes'. There should be a list of currently recognized languages. Click the 'New' button (it is right under the list of languages), and type 'Erlang'. Click apply.
Click the '+' button next to 'Document Classes'. This should expand the list, and Erlang should now be on it. Click Erlang. You should see a list of file extensions associated with Erlang, click 'New', and type '*.erl'.
Now click the '+' button next to 'Erlang' on the left. This should expand a list of several more menus. Click on 'Syntax'. Click the drop down menu and select erlang.syn. If erlang.syn is not there, then the .syn file was not properly placed.
Feel free to edit some other syntax options to customize TextPad to your liking.
Part 3: Compiling from TextPad.
Note: as of 12/05/08 there are severe problems with compiling in textpad. The Erlang shell somehow ignores new compilation when it is done in text pad. This is only useful for checking for errors, when you want to actually run the code, compile it in the Erlang Shell.
In the preferences menu again, click 'tools' on the left.
Click the 'Add' button and select 'Program...'. Navigate to the erl5.6.5\erts-5.6.5\bin\ folder and select erlc.exe. Select and single click the new entry in the list to rename it. Click 'Apply'.
Now click the '+' button next to Tools on the left. Select erlc, or whatever you have named the new tool (I named mine 'Compile Erlang'). The parameters field needs to read '$File', and the initial folder field should read '$FileDir'.
I have had good success with Erlide.
If you use Vim I recommend you Vimerl (http://github.com/jimenezrick/vimerl):
Features
Syntax highlighting
Code indenting
Code folding
Code omni completion
Syntax checking with quickfix support
Code skeletons for the OTP behaviours
Uses configuration from Rebar
Pathogen compatible (http://github.com/tpope/vim-pathogen)
From what i've tried (and are still up to do), a good addition to an erlang dev. environment would be a virtual machine running ubuntu/yaws/erlang. Perhaps Erlyweb (erlang/yaws framework) would be nice checking out too.
Ciaran's posts (this would be the first of his "series") about his erlang install is nice, as he details the steps in setting up the server (and other stuff like xmpp with jabberlang).
Since you're switching to Ubuntu eventually anyways, I highly recommend using erlang-mode for emacs (which comes bundled with the Erlang distribution). It is officially what all the core developers use and what many other developers use because of the many features it offers you.
Installing the Erlang distribution itself should be simple :)