Tutorial by Examples: acl

You may have heard that everything in Python is an object. It is true, and all objects have a class: >>> type(1) int The literal 1 is an instance of int. Lets declare a class: >>> class Foo(object): ... pass ... Now lets instantiate it: >>> bar = Foo() Wh...

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This Example assumes you setup as explained in Example: Setting Up Environment for aurelia-cli Explained of this document. Creating a new project In main host os, open terminal (Mac OS in my case) $cd /path/to/project/vagrant $vagrant up (Launches VM GUI) Log into VM via UI U...

Environment This Example assumes you setup as explained in Example: Setting Up Environment for Aurelia-cli Explained of this document. Summary of setup: On Mac OS X with Vagrant 1.8.4 $cd /path/to/project/vagrant $vagrant up Log into VM via UI as User:vagrant / PW:vagrant $cd /home/vagrant/...

See remarks for discussion of closures. Suppose we have an interface: public interface IMachine<TState, TInput> { TState State { get; } public void Input(TInput input); } and then the following is executed: IMachine<int, int> machine = ...; Func<int, int> machineC...

Given Example class extending BaseExample class with some properties: open class BaseExample(val baseField: String) class Example(val field1: String, val field2: Int, baseField: String): BaseExample(baseField) { val field3: String get() = "Property without backing ...

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select owner, table_name from all_tables ALL_TAB_COLUMNS describes the columns of the tables, views, and clusters accessible to the current user. COLS is a synonym for USER_TAB_COLUMNS. select * from all_tab_columns where table_name = :tname

select * from v$version

Schema changes: You will need to define a new field type in your solr schema file and then you can create fields of that type. Example schema snippet: <!-- Source: solr/example/.../conf/schema.xml --> <?xml version="1.0" encoding="UTF-8" ?> <schema name="a...

The ClassLoader needs to provide a ProtectionDomain identifying the source of the code: public class PluginClassLoader extends ClassLoader { private final ClassProvider provider; private final ProtectionDomain pd; public PluginClassLoader(ClassProvider provider) { this...

Follow the below steps to install Oracle JDK from the latest tar file: Download the latest tar file from here - Current latest is Java SE Development Kit 8u112. You need sudo privilages: sudo su Create a dir for jdk install: mkdir /opt/jdk Extract downloaded tar into it: t...

Implement ICloneable in a class with a twist. Expose a public type safe Clone() and implement object Clone() privately. public class Person : ICloneable { // Contents of class public string Name { get; set; } public int Age { get; set; } // Constructor public Person(string...

Adding the aurelia-configuration to a cli application sometimes produces a build error. This is caused by a missing dependency so we simply add the dependency to the build bundle. Try the following: npm install deep-extend --save npm install aurelia-configuration --save Now add the followi...

# imports import weka.core.converters.ConverterUtils.DataSource as DS import weka.classifiers.trees.J48 as J48 import os # load data data = DS.read(os.environ.get("MOOC_DATA") + os.sep + "anneal.arff") data.setClassIndex(data.numAttributes() - 1) # configure classifier...

Class under test: public class GreetingsService { // class to be tested in isolation private UserService userService; public GreetingsService(UserService userService) { this.userService = userService; } public String getGreetings(int userId, LocalTime time) { // the...

Resource loading in Java comprises the following steps: Finding the Class or ClassLoader that will find the resource. Finding the resource. Obtaining the byte stream for the resource. Reading and processing the byte stream. Closing the byte stream. The last three steps are typically accomp...

A very easy way to connect to an ORACLE database is by using oracledb module. This module handles the connection between your Node.js app and Oracle server. You can install it like any other module: npm install oracledb Now you have to create an ORACLE connection, which you can later query. co...

Using a CASE statement, conditionally display an expression in the column based on values found in another column, a.k.a. “my kingdom for an OR”. In the example, the result is obtained when the status of the transaction is Pending Fulfillment or Partially Fulfilled: CASE DECODE( {status}, 'Pending ...

' How To Seek Past VBA's 2GB File Limit ' Source: https://support.microsoft.com/en-us/kb/189981 (Archived) ' This must be in a Class Module Option Explicit Public Enum W32F_Errors W32F_UNKNOWN_ERROR = 45600 W32F_FILE_ALREADY_OPEN W32F_PROBLEM_OPENING_FILE W32F_FILE_ALREAD...