Given any object in Ruby (on Rails), how can I write a method so that it will display that object's instance variable names and its values, like this:
@x: 1
@y: 2
@link_to_point: #<Point:0x10031b298 @y=20, @x=38>
I also want to be able to print <br> to the end of each instance variable's value so as to print them out nicely on a webpage.
the difficulty now seems to be that not every instance variable has an accessor, so it can't be called with obj.send(var_name)
(the var_name has the "@" removed, so "@x" becomes "x")
I am planning to write a Swing-based application (using Netbeans 6.8).
It seems that Netbeans has a very advanced GUI Editor... Still I have my doubts regarding the code generated by it. Additionally I don't like the fact the part of the code is locked (still I understand the need).
Has anybody used Netbeans GUI Editor with success ?
Does it "scale" ?
Is it possible to write a regular expression for finding a typical file matching pattern.
e.g. File<13/04/2010.txt should be picked up and not any other file.
i.e. Starting file name will be File followed by some dates and then the file extension.
If so, can we specify this pattern in the config file?
Looking for the solution in C#
Thanks
I looked into Logix and EasyExtend for Python. Logix hasn't been around for a while and it failed to install on Python 2.6. EasyExtend's tutorial is hopeless, the code in the tutorial doesn't even work.
I am looking for something so I can write my DSL. My DSL will be used as a research tool. And I don't want to spend time learning all that parsing and compiler theory.
Basically, i'm wanting to know if i can use either machine or assembly language to write a program that will work on any computer with an x86 processor, despite differences in operating systems. For example, you run a program and no matter what computer it's on, it'll display "Hello, World!"
I know it's a little crazy to want to know either of these to languages, but i figure it's an incredible thing to learn, so why not?
i using oracle 10g database, i installed two instance in my machine(dev and dev10g), i using query "select instance_name,status from v$instance" this query return one instance information but i need two (dev and dev10g) instance information, how i write a query. it is possible without using dblink. pls help me.
Is there a way to do 'using' in XAML i.e. declare a namespace and include it in the general xaml scope so I don't have to write namespace:Class, just Class.
I am using OSX 10.6 and it has cron built in. How can I write a cron job that will block my internet from 7pm to 7am every day?
Im sure this must be simple but I could only find one example online and it didn't work. It said to:
set /etc/hosts.allow flie to
be empty
set hosts.deny file to
ALL : ALL
I did this and google still came up.
Sometimes you have to write some of your queries in native SQL rather than hibernate HQL. Is there a nice way to avoid hardcoding table names and fields and get this data from existing mapping?
For example instead of:
String sql = "select user_name from tbl_user where user_id = :id";
something like:
String sql = "select " + Hibernate.getFieldName("user.name") + " from " + Hibernate.getTableName(User.class) + " where " + Hibernate.getFieldName("user.id") + " = :id";
Which classes / frameworks must I look at? I don't want to use 3rd party libs, so just plain old, boring default solutions to read / write text files and stuff like that... Is there something like a File IO framework?
I'm writing an application where I need to read blocks in from a single file, each block is roughly 512 bytes. I am also needing to write blocks simultaneously.
One of the ideas I had was BlockReader implements Runnable and BlockWriter implements Runnable and BlockManager manages both the reader and writer.
The problem that I am seeing with most examples that I have found was locking problems and potential deadlock situations. Any ideas how to implement this?
I started learning jQuery just yesterday, and I like it very much.
And now I decided to write a script where I can change the margin-left of an image when I click on it, hold the clicking and move the mouse.
Depending on mouse coordinates I must change the image's margin-left. Could you give me an idea how I can do it? Thanks.
i want to write a function that prints multi-dimensional objects which are text (or integers, etc.) into <span></span> tags and arrays into unordered lists.
how do you make the function work recursively so that it prints everything regardless of what level it's at in the object?
thanks!
Is it possible to have a pdf file that asks a user a set of questions and then writes their answers to a file, then next time it is viewed loads those answers as default values? I know pdfs can include javascript and have figured out how to add javascript to a pdf with iText (http://itextpdf.com/) but don't know how to prompt for user input or write to a file from inside the pdf.
Any help would be appreciated.
How to write byte by byte to socket in PHP?
For example how can I do something like:
socket_write($socket,$msg.14.56.255.11.7.89.152,strlen($msg)+7);
The pseudo code concatenated digits are actually bytes in dec. Hope you understand me.
I went to http://www.asp.net/mvc and the web installer offered me the option to install MVC 2, but not MVC 1.
I thought MVC 2 was still in beta? Either way, I need to write an MVC 1 app. In visual studio, my only choice is either ASP.NET Web Application or ASP.NET MVC 2 Web Application.
Can anyone advise?
Hi guys,
Can I use TSQL to operate on normal operating system files? Such as create a .bat file at c:\test and write some query result into that batch file?
Thanks.
can you please help me?, i can't explain my question clearly, I define x & y ,i can write plot(f(end,y)) ,but I want to know that how can i must type this code for f(first,y)?thank you!
I would like to write an Android application that can be activated by sending it a command from a web site. Is this possible? Actually, the app would be running on the phone and I would be sending it a command via HTTP.
I noticed that some stylesheets have something like this:
body { font-size: 62.5%/1.2em; }
I got a warning "unexpected token /" when I wrote this in NetBeans. And if I changed the EM value, say,
body { font-size: 62.5%/1em; }
the computed font-size remained 16px.
My question is, Is it standard compliant to write something like that? And how to computed the actual font-size?