Tutorial by Examples: nd

We can add adaptivity to any subclass of UIView which we add on view controller in nib file. Lets take an example of adding adaptivity using size classes to a view. Add a view on view controller as: Now we need to pin this view to it's superview for fixing it's size and position using con...

Pandas don't support missing in attributes of type integer. For example if you have missings in the grade column: df= pd.read_csv("data.csv", dtype={'grade': int}) error: Integer column has NA values In this case you just should use float instead of integers or set the object dtype. ...

Checking Requirements Run bin/symfony_requirements for checking symfony requirements and php cli setting. Install all packages that needed to run a symfony project. Setting your php.ini for example setting timezone and short_open_tag. Setting both php.ini for your php webserver (eg: /etc/php/apache...

(Tested with ANTLR 4.5.3, Eclipse Neon, ANTLR 4 IDE 0.3.5, and Java 1.8) Download the latest ANTLR. Make sure to get the complete ANTLR Java binaries jar. Save to any appropriate location, for example the folder where other Java libraries are stored. It doesn’t matter where, just remember the loc...

Dependency resolver is used to avoid tightly-coupled classes, improve flexibility and make testing easy. You can create your own dependency injector (not recomended) or use one of well-written and tested dependency injectors. In this example I am going to use Ninject. Step one: Create dependency re...

Tk is the absolute root of the application, it is the first widget that needs to be instantiated and the GUI will shut down when it is destroyed. Toplevel is a window in the application, closing the window will destroy all children widgets placed on that window{1} but will not shut down the program...

The most basic case to lift a particular window above the others, just call the .lift() method on that window (either Toplevel or Tk) import tkinter as tk #import Tkinter as tk #change to commented for python2 root = tk.Tk() for i in range(4): #make a window with a label window = tk...

This creates a window in fullscreen with size 500x500 pixels: pygame.init() screen = pygame.display.set_mode((500, 500), pygame.FULLSCREEN) screen represents from now on the window on screen; it is a pygame.Surface object. Anything that should be come visible to the user has to be drawn onto it...

Text box controls are typically used to accept input from the user. A text box control can accept one or more lines of text depending upon the settings of the TextMode attribute. Label controls provide an easy way to display text which can be changed from one execution of a page to the next. If you...

A check box displays a single option that the user can either check or uncheck and radio buttons present a group of options from which the user can select just one option. To create a group of radio buttons, you specify the same name for the GroupName attribute of each radio button in the group. If...

A radio button list presents a list of mutually exclusive options. A check box list presents a list of independent options. These controls contain a collection of ListItem objects that could be referred to through the Items property of the control. Basic syntax of radio button list: <asp:RadioB...

The bulleted list control creates bulleted lists or numbered lists. These controls contain a collection of ListItem objects that could be referred to through the Items property of the control. Basic syntax of a bulleted list: <asp:BulletedList ID="BulletedList1" runat="server&quo...

Ionic has it's own extension for displaying a modal window. Modals can be created by inserting the template straight to the view with a <script> tag or by using a separate template file. In this example we are assuming you have a html file named modal-template.html in a folder called templates...

Octave commands can be saved in a file and evaluated by loading the file using source. For instance, let hello.m be the text file containing two lines (the first line is a comment) # my first Octave program disp('Hello, World!') If you type source hello.m at an Octave command prompt you will g...

A process with a sensitivity list cannot also contain wait statements. It is equivalent to the same process, without a sensitivity list and with one more last statement which is: wait on <sensitivity_list>; Example: process(clock, reset) begin if reset = '1' then q &l...

It is possible to omit the on <sensitivity_list> and the for <timeout> clauses, like in: wait until CONDITION; which is equivalent to: wait on LIST until CONDITION; where LIST is the list of all signals that appear in CONDITION. It is also equivalent to: loop ...

AWS Codecommit can be used as storage for private GIT repositories. The setup involves a few steps, assuming you have a valid AWS account already. Sign up for AWS Codecommit. Currently only region us-east-1 is available. Create a IAM user who will have access to the repositories, eg codecommit-u...

Nightwatch supports creating custom commands that can simulating keystrokes, mouse clicks, and other inputs. A custom command can be chained with other Nightwatch commands, like so: module.exports = { "Login App" : function (client) { client .url("http://localhost:300...

What and Why ? Asp.Net’s Web API2 is the latest version of Web API. It is an easy way to implement a RESTful web service using all of the goodness that the Asp.Net framework provides. Once you understand the basic principles of REST, then a Asp.net Web API2 will be very easy to implement. Web API2...

In [1]: import pandas as pd In [2]: df = pd.DataFrame(columns = ['A', 'B', 'C']) In [3]: df Out[3]: Empty DataFrame Columns: [A, B, C] Index: [] Appending a row by a single column value: In [4]: df.loc[0, 'A'] = 1 In [5]: df Out[5]: A B C 0 1 NaN NaN Appending a ...