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  • Attribute & Reflection libraries for C++?

    - by Fabian
    Most mature C++ projects seem to have an own reflection and attribute system, i.e for defining attributes which can be accessed by string and are automatically serializable. At least many C++ projects I participated in seemed to reinvent the wheel. Do you know any good open source libraries for C++ which support reflection and attribute containers, specifically: Defining RTTI and attributes via macros Accessing RTTI and attributes via code Automatic serialisation of attributes Listening to attribute modifications (e.g. OnValueChanged)

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  • Implicit conversion while using += operator?

    - by bdhar
    Conside the following code: int main() { signed char a = 10; a += a; // Line 5 a = a + a; return 0; } I am getting this warning at Line 5: d:\codes\operator cast\operator cast\test.cpp(5) : warning C4244: '+=' : conversion from 'int' to 'signed char', possible loss of data Does this mean that += operator makes an implicit cast of the right hand operator to int? P.S: I am using Visual studio 2005

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  • getJSON triggered from a button inside a form

    - by nav
    Hi, I'm having trouble understanding why I have to place the button triggering the getJSON method outside of the form for the request to work. If the button is placed within the form then the getJSON method returns no results. The code bascially makes a XHR request on clicking the Submit button, based on the value selected. I have replicated the issue here: http://jsfiddle.net/z6caj/ Many Thanks,

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  • mysql command for update

    - by Mac Taylor
    hey guys i need to add a special text to all rows in my mysql table , how to add some text to the end of all rows' content in a table just for one field i used this code : UPDATE `blogs` SET `title`= `title`+ 'mytext'; but didnt work for me

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  • What is the difference between 1 and '1 in Lisp?

    - by Jason Baker
    I had never really thought about whether a symbol could be a number in Lisp, so I played around with it today: > '1 1 > (+ '1 '1) 2 > (+ '1 1) 2 > (define a '1) > (+ a 1) 2 The above code is scheme, but it seems to be roughly the same in Common Lisp and Clojure as well. Is there any difference between 1 and quoted 1?

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  • vs 2010 colors are darker than i set

    - by Genrih
    I have "Selected Text" color set to a default value in vs 2010 RGB 51,153,253. But really in text editor it is RGB 173,214,255 that is slightly darker. The same things are with some other colors, e.g. Resharper Dead Code. What can it be a problem and how should I solve it?

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  • How to find the class object of Java generic type?

    - by Samuel Yung
    Assume I have a generic type P which is an Enum, that is <P extends Enum<P>>, and I want to get the Enum value from a string, for example: String foo = "foo"; P fooEnum = Enum.valueOf(P.class, foo); This will get a compile error because P.class is invalid. So what can I do in order to make the above code work?

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  • javascript string difference

    - by Konrad
    What is the difference (if any) between the javascript strings defined below? var str1 = "Somestring"; var str2 = 'Somestring'; "" and '' mean two very different things to me predominantly writing code in C++ :-) EDIT: If there is no difference why are there two ways of achieving the same thing and which is considered better practice to use and why. Thanks!

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  • Nicer way to deploy a minified Chrome extension

    - by UVL
    When deploying an extension I follow various steps : copy to a temporary folder all the files, copy/paste back and forth the code to the on-line minifiers / obfuscators and create the zip to be uploaded. It's obvious that this could be simplified with scripting, but my experience on Windows scripting is very limited (most of my experience is server-side). Do I have to look back to the DOS .bat files like in the 90's or is there some cool tool or method I'm not aware?

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  • Online PHP IDE

    - by Dinah
    Is there an IDE for PHP where you can edit the code for your pages online? Real syntax highlighting is minimal. More would be great. I'd like to be able to do development on my site at times other than when I'm not at at home.

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  • Javascript auto calculating with (+) and (-)

    - by Josh
    I need some help finding the error in my javascript calculation. I need to calculate the sum of my input boxes automatically and have my user be able to edit the calculation using + or - buttons. The code I have already does the calculation automatically if you manually enter the numbers, but pressing the + or - does not change the calculation. Here is the code: <html> <head> <script language="javascript"> function Calc(className){ var elements = document.getElementsByClassName(className); var total = 0; for(var i = 0; i < elements.length; ++i){ total += parseInt(elements[i].value); } document.form0.total.value = total; } function addone(field) { field.value = Number(field.value) + 1; } function subtractone(field) { field.value = Number(field.value) - 1; } </script> </head> <body> <form name="form0" id="form0"> 1: <input type="text" name="box1" id="box1" class="add" value="0" onKeyUp="Calc('add')" onChange="updatesum()" onClick="this.focus();this.select();" /> <input type="button" value=" + " onclick="addone(box1);"> <input type="button" value=" - " onclick="subtractone(box1);"> <br /> 2: <input type="text" name="box2" id="box2" class="add" value="0" onKeyUp="Calc('add')" onClick="this.focus();this.select();" /> <input type="button" value=" + " onclick="addone(box2);"> <input type="button" value=" - " onclick="subtractone(box2);"> <br /> 3: <input type="text" name="box3" id="box3" class="add" value="0" onKeyUp="Calc('add')" onClick="this.focus();this.select();" /> <input type="button" value=" + " onclick="addone(box3);"> <input type="button" value=" - " onclick="subtractone(box3);"> <br /> <br /> Total: <input readonly style="border:0px; font-size:14; color:red;" id="total" name="total"> </form> </body></html> Im sure the issue must be small, I just cant put my finger on it.

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  • Creating a fixed axis for Silverlight Toolkit charts

    - by Bill Jeeves
    Every example I see of a series in a Silverlight chart fromt he toolkit has a binding for bothe IndependentValueBinding and DependentValueBinding. In my code I want a fixed axis for the categories (Independent) - so every value get's "X" perhaps. Is there a way to do this? Essentially I have ten bar series in one chart and I want them all to sit together. It seems silly to create a new class to hold them in just so I can add a string property for the axis name.

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  • Emacs bulk indent for Python

    - by Vernon
    Working with Python in Emacs if I want to add a try/catch to a block of code, I often find that I am having to indent the whole block, line by line. In Emacs, how do you indent the whole block at once. I am not an experienced Emacs user, but just find it is the best tool for working through ssh. I am using Emacs on the command line(Ubuntu), not as a gui, if that makes any difference.

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  • textbox accept only digits

    - by hiba salem
    Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress Dim allowedChars As String = "0123456789$," If allowedChars.IndexOf(e.KeyChar) = -1 Then ' Invalid Character e.Handled = True End If End Sub this code accept only digits and its working like a charm but if i typed a wrong number its not allowing me to use the delete or the backspace on the keyboard how to solve this problem ?

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