Transitioning from Windows Forms to WPF

Transitioning from Windows Forms to WPF

For a long time now, I have been stuck with Windows Forms development (started with VB6, and has continued through to C# .NET 4.5), and I have pretty much hit the limit of what Windows Forms can do, both using pure .NET, and special effects

All falsey values in JavaScript

All falsey values in JavaScript

What are the values in JavaScript that are 'falsey', meaning that they evaluate as false in expressions like if(value), value ? and !value?There are some discussions of the purpose of falsey values on StackOverflow already, but no exhaustiv

How do I combine a background-image and CSS3 gradient on the same element?

How do I combine a background-image and CSS3 gradient on the same element?

How do I use CSS3 gradients for my background-color and then apply a background-image to apply some sort of light transparent texture? 1:Multiple backgrounds!body { background: #eb01a5; background-image: url("IMAGE_URL"); /* fallback *

Best way to remove an event handler in jQuery?

Best way to remove an event handler in jQuery?

I have an input type="image". This acts like the cell notes in Microsoft Excel. If someone enters a number into the text box that this input-image is paired with, I setup an event handler for the input-image. Then when the user clicks the i

What are bitwise shift (bit-shift) operators and how do they work?

What are bitwise shift (bit-shift) operators and how do they work?

I've been attempting to learn C in my spare time, and other languages (C#, Java, etc.) have the same concept (and often the same operators) ... What I'm wondering is, at a core level, what does bit-shifting (<<, >>, >>>) do, what problems c

How to trigger event in JavaScript?

How to trigger event in JavaScript?

I have attached an event to a text box using addEventListener. It works fine. My problem arose when I wanted to trigger the event programmatically from another function. How can I do it? 1:You can use fireEvent on IE 8 or lower, and w3c'

Local variables in Python nested functions

Local variables in Python nested functions

Okay, bear with me on this, I know it's going to look horribly convoluted, but please help me understand what's happening.from functools import partialclass Cage(object): def __init__(self, animal): self.animal = animaldef gotimes

Aren't promises just callbacks?

Aren't promises just callbacks?

I've been developing JavaScript for a few years and I don't understand the fuss about promises at all.It seems like all I do is change:api(function(result){ api2(function(result2){ api3(function(result3){ // do work

Why aren't variable-length arrays part of the C++ standard?

Why aren't variable-length arrays part of the C++ standard?

I haven't used C very much in the last few years. When I read this question today I came across some C syntax which I wasn't familiar with.Apparently in C99 the following syntax is valid:void foo(int n) { int values[n]; //Declare a varia

Why Are Floating Point Numbers Inaccurate?

Why Are Floating Point Numbers Inaccurate?

Why do some numbers lose accuracy when stored as floating point numbers?For example, the decimal number 9.2 can be expressed exactly as a ratio of two decimal integers (92/10), both of which can be expressed exactly in binary (0b1011100/0b1

Why does Date.parse give incorrect results?

Why does Date.parse give incorrect results?

Case One:new Date(Date.parse("Jul 8, 2005"));Output:Fri Jul 08 2005 00:00:00 GMT-0700 (PST)Case Two:new Date(Date.parse("2005-07-08"));Output:Thu Jul 07 2005 17:00:00 GMT-0700 (PST)Why is the second parse incorrect? 1:Until the 5th editi

List of lists changes reflected across sublists unexpectedly

List of lists changes reflected across sublists unexpectedly

I needed to create a list of lists in Python, so I typed the following: myList = [[1] * 4] * 3The list looked like this: [[1, 1, 1, 1], [1, 1, 1, 1], [1, 1, 1, 1]] Then I changed one of the innermost values: myList[0][0] = 5Now my list

Anonymous variables in Erlang

Anonymous variables in Erlang

What are the exact differences between underscore variables and a named variable that starts with underscore from the Erlang compiler point of view (apart from adding readability to the code)?For example are _ and _Var different? 1:The d

Disable stylecop analysis for specific projects within solution

Disable stylecop analysis for specific projects within solution

Is there a way to easily stop StyleCop warnings from being displayed within specific projects in a solution. Or, more pointedly, a way to select which projects StyleCop analysis should be performed on by Visual Studio? We have a solution wi

Among Find, Single, First, which one is the fastest?

Among Find, Single, First, which one is the fastest?

I want to minimize the time needed to retrieve a single unique element from a list.Which one is the fastest method among Find, Single and First?Note that the searching key is a unique id. 1:The fastest (for a large set) would be to have

java.util.ConcurrentModificationException with iterator

java.util.ConcurrentModificationException with iterator

I know if would be trying to remove from collection looping through it with the simple loop I will be getting this exception: java.util.ConcurrentModificationException. But I am using Iterator and it still generates me this exception. Any i

$this->session->set_flashdata() and then $this->session->flashdata() doesn't work i

$this->session->set_flashdata() and then $this->session->flashdata() doesn't work i

Please take a look at the following code:$this->session->set_flashdata('message', 'This is a message.');var_dump($this->session->flashdata('message'));It returns bool(false).I hope it doesn't NEED a redirect() to be recallable after that, b

When is Java 6 end of life? (In the context of writing developer tools) [closed]

When is Java 6 end of life? (In the context of writing developer tools) [closed]

BackgroundThis is not as immediately obvious to figure out as you would think.First off, while Oracle has stopped public support of Java 6 as of Feb 2013 but with Premier support going out to Dec 2013 and Extended support going to Dec 2016

How to replace all spaces in a string

How to replace all spaces in a string

i have two html text input, out of that what ever user type in first text box that need to reflect on second text box while reflecting it should replace all spaces to semicolon. I did to some extant and it replacing for first space not for

ios confused about strong/weak references

ios confused about strong/weak references

I've looked through the questions on strong/weak references, and understand the reason for using weak (the parent to child relationship). However, I'm confused about specific scenarios where a parent to child relationship is created. For ex

How can I change a specific RGB color into a specific CMYK color in a PDF file?

How can I change a specific RGB color into a specific CMYK color in a PDF file?

If I have a PDF file with objects (text, line-art) in a specific RGB color, and I want to convert those objects to have a specific CMYK color, what libraries are available that will let me do that?Note that I don't need the ability to "map"

How to send and receive data in Android Programming using bluetooth without pairing?

How to send and receive data in Android Programming using bluetooth without pairing?

I am new to Android programming, and have java concept, I want to know that how can I send and receive data using bluetooth without pairing or any password (Only if both device has my app installed), any suggestion? 1:As far as I know it

Fill factor for a sequential index that is PK

Fill factor for a sequential index that is PK

Yes, fill factor again. I spend many hours reading and I can't decide which is the better fill factor for each case. The problem is I don't understand when and how the fragmentation is made. I'm migrating a database from MS SQL Server to a

Specifying custom error bars in ggplot2 when using facet_grid

Specifying custom error bars in ggplot2 when using facet_grid

I have created multiple bar charts from my data, using stat_summary. However, I want to manually specify the limits of the error bars (instead of using mean_cl_boot). How can this be done for data graphed using facet_grid?The code I used to

How to use SIFT/SURF as features for a machine learning algorithm?

How to use SIFT/SURF as features for a machine learning algorithm?

Im working on an automatic image annotation problem in which im trying to associate tags with images. For that im trying for SIFT features for learning. But the problem is all the SIFT features are a set of keypoints, each of which have a 2