Tutorial by Examples: d

ascent, descent and baseline

the units-per-em property is one of the most important font properties. It's used to give any value of any other property any meaning. the CSS2 font spec has a nice definition of the em sqare: Certain values, such as width metrics, are expressed in units that are relative to an abstract square w...

SVG • Creating fonts

The currentColor keyword

currentColor is most usefull in inline SVGs. With this you can inherit the parents css color and use it everywhere colors are used in SVG. In this example the first circle uses the text color as fill color, and the second circle uses it as the stroke color. <html> <head> ...

SVG • Colors

Reading XML form URL with Retrofit 2

We will use retrofit 2 and SimpleXmlConverter to get xml data from url and parse to Java class. Add dependency to Gradle script: compile 'com.squareup.retrofit2:retrofit:2.1.0' compile 'com.squareup.retrofit2:converter-simplexml:2.1.0' Create interface Also create xml class wrapper in our cas...

Android • Retrofit2

Examples fields of Odoo 8

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...

odoo-8 • Fields used in Odoo 8

Set the config in the created bundle

For instance you have a bundle, which generated by the symfony console. In this case in the DependencyInjection/Configuration.php you have to insert your configuration representation: $treeBuilder = new TreeBuilder(); $rootNode = $treeBuilder->root('amazingservice'); $rootNod...

symfony2 • Configuration for own bundles

Why Use Getters and Setters?

Consider a basic class containing an object with getters and setters in Java: public class CountHolder { private int count = 0; public int getCount() { return count; } public void setCount(int c) { count = c; } } We can't access the count variable because it's private. But we can ac...

Java Language • Getters and Setters

Keyboard short-cut to replace currenlty highlighted word

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.

vim • Substitution

No-Argument method mocking

interface Mockable { bool DoSomething(); } var mock = new Mock<Mockable>(); mock.Setup(x => x.DoSomething()).Returns(true); var result = mock.Object.DoSomething(); //true

moq • Mocking Behavior

Data Flow

This is outline of comprehensive Overview. Flux pattern assumes the use of unidirectional data flow. Action — simple object describing action type and other input data. Dispatcher — single action receiver and callbacks controller. Imagine it is central hub of your application. St...

React • Using ReactJS in Flux way

ROC-AUC score with overriding and cross validation

One needs the predicted probabilities in order to calculate the ROC-AUC (area under the curve) score. The cross_val_predict uses the predict methods of classifiers. In order to be able to get the ROC-AUC score, one can simply subclass the classifier, overriding the predict method, so that it would a...

scikit-learn • Receiver Operating Characteristic (ROC)

Save a method call in a variable

In Controller: $this->load->model('your_model'); $data['model'] = $this->your_model; In view: $model->your_method;

codeigniter • Calling a model method in a view

Removing missing data from a vector

First lets create a vector called Vector1: set.seed(123) Vector1 <- rnorm(20) And add missing data to it: set.seed(123) Vector1[sample(1:length(Vector1), 5)] <- NA Now we can use the is.na function to subset the Vector Vector1 <- Vector1[!is.na(Vector1)] Now the resulting vect...

R Language • Cleaning data

Move all files not already in a directory into a self named directory

ll | grep ^- | awk -F"." '{print $2 "." $3}' | awk -F":" '{print $2}' | awk '{$1=""; print $0}' | cut -c2- | awk -F"." '{print "mkdir ""$1"";mv ""$1"."$2"" ""$1"""}' >...

Bash • Creating directories

Expression evaluation order

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...

Java Language • Expressions

Introduction

Objects become eligible for garbage collection (GC) if they are no longer reachable by the main entry point(s) in a program. GC is usually not performed explicitly by the user, but to let the GC know an object is no longer needed a developer can: Dereference / assign null someFunction { var ...

garbage-collection • Getting started with garbage-collection

Binding a String in the ViewModel to a TextBox in the View

SampleViewModel.vb 'Import classes related to WPF for simplicity Imports System.Collections.ObjectModel Imports System.ComponentModel Public Class SampleViewModel Inherits DependencyObject 'A class acting as a ViewModel must inherit from DependencyObject 'A simple string p...

Visual Basic .NET Language • WPF XAML Data Binding

Set View backround with image

self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Background.png"]];

iOS • Set View Background

Custom completion block for Custom Methods

1- Define Your own custom Block typedef void(^myCustomCompletion)(BOOL); 2- Create custom method which takes your custom completion block as a parameter. -(void) customMethodName:(myCustomCompletion) compblock{ //do stuff // check if completion block exist; if we do not check it will ...

iOS • Block

gulp CLI docs

Flags gulp has very few flags to know about. All other flags are for tasks to use if needed. -v or --version will display the global and local gulp versions --require <module path> will require a module before running the gulpfile. This is useful for transpilers but also has other applica...

gulp • Getting started with gulp

Finding and reading resources using a classloader

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...

Java Language • Resources (on classpath)