Tutorial by Examples: p

This example is filtered text from an IRB session. => require 'erb' => input = <<-HEREDOC <ul> <% (0..10).each do |i| %> <%# This is a comment %> <li><%= i %> is <%= i.even? ? 'even' : 'odd' %>.</li> <% end %> </ul> H...

In order to achieve type safety sometimes we want to avoid the use of primitive types on our domain. For instance, imagine a Person with a name. Typically, we would encode the name as a String. However, it would not be hard to mix a String representing a Person's name with a String representing an e...

In OCaml, there are different arithmetic operators for floats and integers. Additionally, these operators can only be used on 2 floats or 2 integers. Here are invalid expressions in OCaml 1.0 + 2.0 1 + 2.0 1 +. 2 1 +. 2.0 The correct expression for each of these respectively are 1. +. 2. fl...

When you logged into Odoo application you will find an option to see who is the current logged in person in the top right corner. This user information have a dropdown button. Click on the dropdown, then you will find a list. In that list select about Odoo.com option. Clicking on that will open a Ab...

Main motive to develop this compound view is, below 5.0 devices does not support svg in drawable inside TextView/EditText. One more pros is, we can set height and width of drawableRight inside EditText. I have separated it from my project and created in separate module. Module Name : custom_edit_d...

A simple example of an svg font. A few things to note here: the coordinate system of the glyphs is in opposition to the usual coordinate system in svg. the y axis points upwards. The point 0,0 is in the lower right corner. All paths in a font must be drawn counter clockwise. In most tools only ...

<# .DESCRIPTION Writes the metric out in bosun external collector format which is compatible with scollector external scripts .PARAMETER metric Name of the metric (eg : my.metric) .PARAMETER type Type of metric (counter, gauge, etc) .PARAMETER unit ...

Odoo uses ORM(Object Relational Mapping) technique to interact with database. ORM will help to create a virtual object database that can be used within from the Python. In ORM technique each model is represented by a class that sub-classes Models.model. Models.model is the main super class for regu...

amazingservice: url: 'http://amazing.com' client_id: 'test_client_1' client_secret: 'test_secret' This is a basic example for create configuration in yml format, for following the yml format you can take deeper configuration.

In this example we will ask the bitcoin network for the merkle block number 442603. In order to do this we need to send a filterload message and then we have to send a getdata message using the inventory type MSG_MERKLEBLOCK. The peers should reply with a merkleblock message for the requested bloc...

By default, accessing an individual item in a template dom-repeat loop is by calling {{item}}. Passing in an as= attribute to template will allow you to switch out the default {{item}} syntax for something that is more customized to the module you are working with. In this case, we want to grab the ...

For example, with following nmap: nmap <expr> <S-F6> ':%s/' . @/ . '//gc<LEFT><LEFT><LEFT>' select a word with *, type Shift-F6, type in a replacement and hit Enter to rename all occurrences interactively.

Click on New Files --> Transformation once a new transformation is open, Click on views tab ,under views create two connections (source ) and (destination). source: table where data is available destination: table where you want to push your data. Once done. on the top bar you have tools -...

Adding a icon to your tray-bar let tray = null; let mainWindow = null; let user = null; app.on('ready', () => { /** * Tray related code. */ const iconName = 'icon.png'; const iconPath = path.join(__dirname, iconName); tray = new Tray(iconPath); tray.setT...

Helper functions are used in conjunction with select to identify variables to return. Unless otherwise noted, these functions expect a string as the first parameter match. Passing a vector or another object will generate an error. library(dplyr) library(nycflights13) starts_with starts_with al...

You must to add to web.xml a configuration tag like this: <context-param> <param-name>facelets.SKIP_COMMENTS</param-name> <param-value>true</param-value> </context-param> Now you can use normal HTML comments tag <!-- and --> <!-- <...

There might be times where you have a data frame and you want to remove all the rows that might contain an NA value, for that the function complete.cases is the best option. We will use the first 6 rows of the airquality dataset to make an example since it already has NAs x <- head(airquality) ...

A constant expression is an expression that yields a primitive type or a String, and whose value can be evaluated at compile time to a literal. The expression must evaluate without throwing an exception, and it must be composed of only the following: Primitive and String literals. Type ca...

In Apache Spark while doing shuffle operations like join and cogroup a lot of data gets transferred across network. Now, to control the number of partitions over which shuffle happens can be controlled by configurations given in Spark SQL. That configuration is as follows: spark.sql.shuffle.partiti...

Java expressions are evaluated following the following rules: Operands are evaluated from left to right. The operands of an operator are evaluated before the operator. Operators are evaluated according to operator precedence Argument lists are evaluated from left to right. Simple Example I...