Tutorial by Examples: od

For now I think the catalog module contains almost everything you can add to a module. Api - Contains the service contracts. A set of interfaces that should not be changed unless the minor version changes. Not mandatory for a custom module but nice to have for comercial extensions. Data - Data...

ODS (on-disk structure) version is a number representing version of the database low-level data layout structure (ODS). When a new feature is added to Firebird it might or might not require the structure of database pages or system tables (database metadata) to change. If it does, the ODS version mu...

For some use cases, you can use the using syntax to help define a custom scope. For example, you can define the following class to execute code in a specific culture. public class CultureContext : IDisposable { private readonly CultureInfo originalCulture; public CultureContext(string ...

class Card: special_names = {1:'Ace', 11:'Jack', 12:'Queen', 13:'King'} def __init__(self, suit, pips): self.suit = suit self.pips = pips # Called when instance is converted to a string via str() # Examples: # print(card1) # print(str(card1) ...

QModelIndex does not actually know about it's parent/child indexes, it only contains a row, a column and a pointer, and it is the models responsibility to use this data to provide information an index's relations. The model therefore needs to do a lot of conversions from the void* stored inside the ...

#!/bin/bash #Print Date / Time in different Formats date1=$(date +'%d-%m-%y') date2=$(date +'%d-%m-%Y') date3=$(date +'%d-%b-%Y') date4=$(date +'%d-%B-%Y') date5=$(date +'%a %d-%b-%Y') date6=$(date +'%a %d-%b-%Y %Z') date7=$(date +'%A %d-%b-%Y') echo "Print Date in different forma...

An example to perform login test based on Page object pattern: import org.openqa.selenium.WebDriver; import org.openqa.selenium.WebElement; import org.openqa.selenium.support.FindBy; import org.openqa.selenium.support.PageFactory; /** * Class which models the view of Sign-In page */ publ...

One can verify whether a method was called on a mock by using Mockito.verify(). Original mock = Mockito.mock(Original.class); String param1 = "Expected param value"; int param2 = 100; // Expected param value //Do something with mock //Verify if mock was used properly Mockito.veri...

Factory Method is one of creational design patterns. It is used to deal with the problem of creating objects without specifying exact result type. This document will teach you how to use Factory Method DP properly. Let me explain the idea of it to you on a simple example. Imagine you're working in ...

Static .Net library methods can be called from PowerShell by encapsulating the full class name in third bracket and then calling the method using :: #calling Path.GetFileName() C:\> [System.IO.Path]::GetFileName('C:\Windows\explorer.exe') explorer.exe Static methods can be called from the c...

An array is a data structure that stores values of same data type. In Python, this is the main difference between arrays and lists. While python lists can contain values corresponding to different data types, arrays in python can only contain values corresponding to same data type. In this tutorial...

Template method pattern is a behavioral design pattern that defines the program skeleton of an algorithm in an operation, defering some steps to subclasses. Structure: Key notes: Template method uses Inheritance The Template method implemented by the base class should not be overridden. In t...

Modules can be required without using relative paths by putting them in a special directory called node_modules. For example, to require a module called foo from a file index.js, you can use the following directory structure: index.js \- node_modules \- foo |- foo.js \- package.json ...

Usage: $ nodetool repair [-h | -p | -pw | -u] <flags> [ -- keyspace_name [table_name]] Default Repair Option $ nodetool repair This command will repair the current node's primary token range (i.e. range which it owns) along with the replicas of other token ranges it has in all tables a...

Swift 2 import UIKit extension UIDevice { var modelName: String { var systemInfo = utsname() uname(&systemInfo) let machineMirror = Mirror(reflecting: systemInfo.machine) let identifier = machineMirror.children.reduce("") { identifier, ele...

my_array = array('i', [1,2,3,4,5]) my_array.append(6) # array('i', [1, 2, 3, 4, 5, 6]) Note that the value 6 was appended to the existing array values.

We can use the insert() method to insert a value at any index of the array. Here is an example : my_array = array('i', [1,2,3,4,5]) my_array.insert(0,0) #array('i', [0, 1, 2, 3, 4, 5]) In the above example, the value 0 was inserted at index 0. Note that the first argument is the index while se...

A python array can be extended with more than one value using extend() method. Here is an example : my_array = array('i', [1,2,3,4,5]) my_extnd_array = array('i', [7,8,9,10]) my_array.extend(my_extnd_array) # array('i', [1, 2, 3, 4, 5, 7, 8, 9, 10]) We see that the array my_array was extended...

Here is an example: my_array = array('i', [1,2,3,4,5]) c=[11,12,13] my_array.fromlist(c) # array('i', [1, 2, 3, 4, 5, 11, 12, 13]) So we see that the values 11,12 and 13 were added from list c to my_array.

Here is an example : my_array = array('i', [1,2,3,4,5]) my_array.remove(4) # array('i', [1, 2, 3, 5]) We see that the element 4 was removed from the array.