Tutorial by Examples: et

proc myproc {} { puts "hi" } myproc # => hi An empty argument list (the second argument after the procedure name, "myproc") means that the procedure will not accept arguments.

proc myproc {alpha beta} { ... set foo $alpha set beta $bar ;# note: possibly useless invocation } myproc 12 34 ;# alpha will be 12, beta will be 34 If the argument list consists of words, those will be the names of local variables in the procedure, and their initi...

### Definition proc myproc {alpha {beta {}} {gamma green}} { puts [list $alpha $beta $gamma] } ### Use myproc A # => A {} green myproc A B # => A B green myproc A B C # => A B C This procedure accepts one, two, or three arguments: those parameters whose names are the fi...

proc myproc args { ... } proc myproc {args} { ... } ;# equivalent If the special parameter name args is the last item in the argument list, it receives a list of all arguments at that point in the command line. If there are none, the list is empty. There can be arguments, including optional one...

proc myproc {varName alpha beta} { upvar 1 $varName var set var [expr {$var * $alpha + $beta}] } set foo 1 myproc foo 10 5 puts $foo # => 15 In this particular case, the procedure is given the name of a variable in the current scope. Inside a Tcl procedure, such variables aren't...

Variables in Visual Basic are declared using the Dim keyword. For example, this declares a new variable called counter with the data type Integer: Dim counter As Integer A variable declaration can also include an access modifier, such as Public, Protected, Friend, or Private. This works in conju...

# application.rb config.time_zone = 'Eastern Time (US & Canada)'

# application.rb config.time_zone = 'Eastern Time (US & Canada)' config.active_record.default_timezone = :local

Commonly you would use :set to set options to your liking in your .vimrc. There are many options that can be changed. For example, in order to use spaces for indentation: :set expandtab :set shiftwidth=4 :set softtabstop=4

The GetParentFolderName method returns the parent folder for any path. While this can also be used with folders, it is arguably more useful for extracting the path from an absolute file path: Dim fso As New Scripting.FileSystemObject Debug.Print fso.GetParentFolderName("C:\Users\Me\My Docume...

Keeping a GUI responsive while running a lengthy process requires either some very elaborate "callbacks" to allow the GUI to process its message queue, or the use of (background) (worker) threads. Kicking off any number of threads to do some work usually isn't a problem. The fun starts wh...

PostgreSQL is an actively developed and mature open source database. Using the psycopg2 module, we can execute queries on the database. Installation using pip pip install psycopg2 Basic usage Lets assume we have a table my_table in the database my_database defined as follows. idfirst_namelast_n...

If you want have a long text to display in the context, you need to set a custom content. For example, you have this: But you wish your text will be fully shown: All you need to do, is to add a style to your content like below: private void generateNotification(Context context) { ...

The first thing to do when taking your Meteor app offline is to create some visual indication of whether the local client app is connected to the server or not. There are lots of ways to do this, but the simplest way is to probably do something like this: Template.registerHelper('getOnlineStatus', ...

Alternatively, you may want to build your application, and then deploy it.. cd myapp meteor build --directory ../output cd .. scp output -r username@destination_host:/var/www/myapp-production

If you're running a replica set or have a need to shard your database, you'll want an upstart script that looks something like this: # /etc/init/myapp.conf description "myapp.mydomain.com" author "[email protected]" # used to be: start on startup # until we found som...

https://www.phusionpassenger.com/ https://github.com/phusion/passenger https://github.com/phusion/passenger/wiki/Phusion-Passenger:-Meteor-tutorial#wiki-installing

As of Meteor 1.0.2, there's a new command shell which you can use to do interactive debugging and manage your app from the server side, just like you do with the Chrome Console on the client side! Check it out: meteor shell

Static server assets must be placed in the private directory. Text files Text files can be accessed by using the Assets.getText(assetPath, [asyncCallback]) method. For example, the following JSON file is named my_text_asset.json and is located in the private directory: { "title": &...

This is very common, you memorize a path to a file or folder, you open up Vim and try to write what you've just memorized, but you are not 100% sure it's correct, so you close the editor and start over. When you want the path completion feature, and you have a file /home/ubuntu/my_folder/my_file a...