white space.ctl

[Wintersweet]

Hello,

I tried to save a LabVIEW 2019 project into LabVIEW2014 project, so that all the VIs are in 2014 version. I can rebuild the subVIs in LabVIEW2014. But there is a 'white space.ctl' in 2019 project. I don't understand, what is the function of this control? and what should I do to use it in 2014?How can I find out which function in LabVIEW 2019 has used this control?(If I find out it, I can try to use another function in LabVIEW 2014).Thank you for tipps.

[Bob_Schor]

In type, "White Space" refers to those characters that "don't print".  They include <space>, <horizontal tab>, <vertical tab>, <carriage return>, <line feed>, and <form feed> (which used to be called "Page Eject", back when there were monsters called "line printers".  The White Space function takes a character and returns a Boolean, True if it is a "White Space" character, otherwise False.  I'd never heard of it before, figure it is pretty obscure, and thus you don't really need to worry about it (you can code it yourself if you need to, but why bother?).

Bob Schor

[Wintersweet]

Hello,

thanks for answering. I understand it now. I created a new VI by my self with LV2014. Now it works 🙂

[billko]

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@Bob_Schor wrote:

In type, "White Space" refers to those characters that "don't print".  They include <space>, <horizontal tab>, <vertical tab>, <carriage return>, <line feed>, and <form feed> (which used to be called "Page Eject", back when there were monsters called "line printers".  The White Space function takes a character and returns a Boolean, True if it is a "White Space" character, otherwise False.  I'd never heard of it before, figure it is pretty obscure, and thus you don't really need to worry about it (you can code it yourself if you need to, but why bother?).

Bob Schor

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This is going back several decades, but there was a line printer monstrosity named the IBM Laser 3800 that was as long as an SUV and almost as tall.  It spat out 350 pages per minute.  Imagine draining a standard ream of paper in about a minute-and-a-half.  It was a thing to behold when it was running.  But it could fail in so many spectacular ways.