getting one line from unknown amount of lines (gui)

hi.

i am building assembly simulator in gui and i need help ,

how do i get only one line from unknown amont of lines into one variable.

i know i can do it with get function, but with this function i get all the text in "edit text" window into variable.

one more question,

how can i disassemble the sentence? so i can work with the words.

[Geoff Hayes]

reuven - please clarify what you mean by how do i get only one line from unknown amont of lines into one variable. Do you have a text file that you are trying to get a random line from? Or something else?

[reuven reuven]

[Bob Thompson]

Have you heard about regexp? Do you have the text in an actual string variable, or cells, or is this image analysis?

[reuven reuven]

In the picture its a text that user write, and i need to analyse the text.

i think it is a string, and i need to build functions for each command.

Basically build program that will simulate program like armsim.

[Bob Thompson]

If you do indeed have a string, then regexp is one of the most powerful tools you can learn. It allows you to do all kinds of things, from extracting specific bits of the string, splitting the string into multiple parts, or just identifying whether contents of the string match some other input or flag. I would put an example, but I think that you would be better off reading the documentation for regexp. It's a bit intimidating at first, but once you figure out the general gist of how it works it's pretty straight forward.

[TADA]

So you're basically building a parser... Like Bob nbob says, regexp is your friend in these situations

You can divide the lines of code to an array of lines with:

lines = splitlines(str);

For this example you can use a fairly simple regexp to split the string to command and parameters, using named groups in your pattern and this formalism:

data = regexp(string, pattern, 'names');

Can be very convenient for extracting stuff from strings

[reuven reuven]

Thank you.