Tutorial by Examples: od

When Oracle implicitly converts from a DATE to a string or vice-versa (or when TO_CHAR() or TO_DATE() are explicitly called without a format model) the NLS_DATE_FORMAT session parameter will be used as the format model in the conversion. If the literal does not match the format model then an excepti...

macro(set_my_variable _INPUT) if("${_INPUT}" STREQUAL "Foo") set(my_output_variable "foo") else() set(my_output_variable "bar") endif() endmacro(set_my_variable) Use the macro: set_my_variable("Foo") message(STATUS ${my_outpu...

The special attribute __name__ of a function, class or module is a string containing its name. import os class C: pass def f(x): x += 2 return x print(f) # <function f at 0x029976B0> print(f.__name__) # f print(C) # <class '__main__.C'> print(C.__name__...

When you extend a class, you can override methods that the inherited class defines using the override keyword: public class Example { public function test():void { trace('It works!'); } } public class AnotherExample extends Example { public override function test():void ...

Who says you cannot throw multiple exceptions in one method. If you are not used to playing around with AggregateExceptions you may be tempted to create your own data-structure to represent many things going wrong. There are of course were another data-structure that is not an exception would be mor...

Prefabs are an asset type that allows the storage of a complete GameObject with its components, properties, attached components and serialized property values. There are many scenarios where this is useful, including: Duplicating objects in a scene Sharing a common object across multiple scenes ...

The view-model is the "VM" in MVVM. This is a class that acts as a go-between, exposes the model(s) to the user interface (view), and handling requests from the view, such as commands raised by button clicks. Here is a basic view-model: public class CustomerEditViewModel { /// <s...

The model is the first "M" in MVVM. The model is usually a class containing the data that you want to expose via some kind of user interface. Here is a very simple model class exposing a couple of properties:- public class Customer : INotifyPropertyChanged { private string _forenam...

If you are familiar with jQuery and Sizzle syntax, d3 selections should not be much different. d3 mimics the W3C Selectors API to make interacting with elements easier. For a basic example, to select all <p> and add a change to each of them: d3.selectAll('p') .attr('class','textClass') ...

TYPO3 Extbase extension development method came along with the release of TYPO3 4.3.0 in November 2009. Extbase is a PHP-based framework which supports developers in creating clean and easily maintainable TYPO3 extensions.The first real presentation of Extbase happened in April 2009 on the american ...

return : http://www.example.com/my-product.html

If you ever wanted to determine the html content to be printed on a page during run time then, rails has a very good solution for that. It has something called the content_for which allows us to pass a block to a rails view. Please check the below example, Declare content_for <div> <%=...

/** * The first line in the build configuration applies the Android plugin for * Gradle to this build and makes the android {} block available to specify * Android-specific build options. */ apply plugin: 'com.android.application' /** * The android {} block is where you configure all...

import pandas.io.sql import pyodbc import pandas as pd Specify the parameters # Parameters server = 'server_name' db = 'database_name' UID = 'user_id' Create the connection # Create the connection conn = pyodbc.connect('DRIVER={SQL Server};SERVER=' + server + ';DATABASE=' + db + '; UID...

Homebrew You can install Node.js using the Homebrew package manager. Start by updating brew: brew update You may need to change permissions or paths. It's best to run this before proceeding: brew doctor Next you can install Node.js by running: brew install node Once Node.js is installe...

Encoding //Create a Base64 Encoded NSString Object NSData *nsdata = [@"iOS Developer Tips encoded in Base64" dataUsingEncoding:NSUTF8StringEncoding]; // Get NSString from NSData object in Base64 NSString *base64Encoded = [nsdata base64EncodedStringWithOptions:0]; // Print the B...

The extension 'realurl' provides complete transformation of URLs with GET parameter in the browser, like “index.php?id=123&type=0&L=1” into a virtual path, a so called “Speaking URL” like “home/about-us/index.html” and back again. The objective is that URLs shall be as human readable as poss...

By default, ui-router encodes the slash / inside parameters. If you want to send a path in the URL, you need to define a custom parameter type. Define: module.config(['$urlMatcherFactoryProvider', function($urlMatcherFactory) { $urlMatcherFactory.type('path', { decode: function(val) { retu...

Modules are documented elsewhere. Compilers often generate so-called module files: usually the file containing module my_module end module will result in a file named something like my_module.mod by the compiler. In such cases, for a module to be accessible by a program unit, that module file...

Uploading Files Uploading files in Yii is usually done with the help of [[yii\web\UploadedFile]] which encapsulates each uploaded file as an UploadedFile object. Combined with [[yii\widgets\ActiveForm]] and models, you can easily implement a secure file uploading mechanism. Creating Models Lik...