Tutorial by Examples: r

Even when sockets are in "blocking" mode, the read and write operations on them do not necessarily read and write all the data available to be read or written. In order to write an entire buffer into a socket, or read a known quantity of data from a socket, they must be called in a loop. ...

This is a very basic example how to load a pyqt ui file to maya with pyqt libs. In this solution you really don't need to convert your pyqt ui file a python file. You can simply load your pyqt ui. from PyQt4 import QtCore, QtGui, uic import maya.OpenMayaUI as mui import sip baseUI ...

There are only 4 character operators, in their order of precedence: OperatorDescription()Parentheses for grouping. Note: VFP documentation, that I have, misses this one. Without this, - operator is almost always useless.+Concatenates (joins) strings side by side.-Concatenates strings by moving the ...

In this example, we trying to create a gui with only through code rather than using any ui file. Its a very basic example you need to extend based on your need." from PyQt4 import QtCore, QtGui import maya.OpenMayaUI as mui import sip class Ui_MainWindow(QtGui.QMainWindow): def __ini...

setAttr Basically as any other language setAttr can set a value for a specified attribute of a node or any context. And it support very wide range of options. For detailed instructions please visit the official documentation from maya itself here. Here is a very minimal example of setAttr nodeNam...

[![Sample equation][1]][1] sympy provides its solution as a Python set of expressions in terms of parametric variables, as shown here in the final line. >>> from sympy.solvers.diophantine import diophantine >>> from sympy import var >>> x,y,z=var('x y z') >>>...

Overview Create a new file named my_first_method.rb Place the following code inside the file: def hello_world puts "Hello world!" end hello_world() # or just 'hello_world' (without parenthesis) Now, from a command line, execute the following: ruby my_first_method.rb The ou...

Sub DisplayExcelVersions() MsgBox "The version of Excel is " & Application.Version MsgBox "The version of the VBE is " & Application.VBE.Version End Sub The use of the Application.Version property is useful for ensuring code only operates on a compatible...

If you want to provide Custom Error Messages you would do it like this: public class LoginViewModel { [Required(ErrorMessage = "Please specify an Email Address")] [EmailAddress(ErrorMessage = "Please specify a valid Email Address")] public string Email { get; set...

This small example shows how you can lose backward compatibility in your programs if you do not take care in advance about this. And ways to get more control of serialization process At first, we will write an example of the first version of the program: Version 1 [Serializable] class Data { ...

I have tested the following steps on Amazon EC2 with Ubuntu 14.04 Here is a summary of command lines to install LAMP technology stack (before installing wordpress): 1: Install LAMP technology stack Update linux #> sudo apt-get update -> update package repositories information #> su...

To encrypt data with a public key: final Cipher rsa = Cipher.getInstance("RSA"); rsa.init(Cipher.ENCRYPT_MODE, keyPair.getPublic()); rsa.update(message.getBytes()); final byte[] result = rsa.doFinal(); System.out.println("Message: " + message); System.out.println("...

@Path("/hello") public class HelloResource { /** * A request to /hello would get the response "Hello World" */ @GET public String exampleGet() { return "Hello World"; } /** * A request to /hello/bob would get ...

import javax.ws.rs.*; import javax.ws.rs.core.Response; import java.util.HashMap; import java.util.Map; import java.util.Objects; @Path("/alphabet/{letter}") public class AlphabetResource { private final Map<String, String> alphabet; public AlphabetResource(...

When adding custom fields to a Lucene index you can add new fields into the index using the following configuration: <configuration ref="contentSearch/indexConfigurations/defaultLuceneIndexConfiguration"> <indexAllfields>false</indexAllfields> <fieldNames hint=...

There are basically two operators for date, datetime values. + and - are overloaded (probably a C term) to do date/datetime math: OperatorDescription+Adds days (date) or seconds (datetime) to a date/datetime value.-Gets the difference of two date/datetime values. Subtracts days (date) or seconds (d...

First step : PCL part using Xamarin.Forms; namespace ProjectNamespace { public class ExtendedFrame : Frame { /// <summary> /// The corner radius property. /// </summary> public static readonly BindableProperty CornerRadiusProperty = ...

You can enable/disable ajax and client validations in active form. $form = ActiveForm::begin([ 'id' => 'signup-form', 'enableClientValidation' => true, 'enableAjaxValidation' => true, 'validationUrl' => Url::to('signup'), ]); enableClientValidation is by defaul...

Swift Import the Core Motion library: import CoreMotion Next, we need to create a CMAltimeter object, but a common pitfall is to create it in the viewDidLoad(). If done that way, the altimeter won’t be accessible when we need to call a method on it. Nevertheless, go ahead and create your CMAlti...

Springfox defines a set default response messages that are applied to all API controllers by default. This includes e.g. 201 - Created and 204 - No Content, as well as several 40x responses. There might be cases, in which the default response messages don't apply for your API. You have to build-in p...