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glandium

There is also ≠.

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Where do I buy a keyboard that emmits that?

In Emacs, using a normal keyboard: “C-\ TeX RET \ne”.

You already have one: ≠

That works in the linux command line, and in this text field on linux:

  ctrl-shift-u2260enter

Of course now you have to find the code. I've always had luck with wikipedia. Also I'm assuming my locale, etc etc works the same for everyone.

http://fsymbols.com/keyboard/linux/unicode/

Similar methods available for windows and mac, I imagine.

If you're in Linux, and you have a key mapped to Compose, you can hit "Compose = /" or "Compose / =" to get ≠.

On Mac I believe it's just Option-=.

Typing the more unusual characters has always been way easier on Macs. (Literally since Macs were invented.)

> Typing the more unusual characters has always been way easier on Macs.

That used to be the case, but I find the Compose key in X is awesome: as others have noted, Compose / = → ≠ (and → is Compose - >)

That Compose system (which I haven't tried yet) does seem like a vast improvement!

On Mac, hit control+command+space, type "not equal", and hit down then left, choosing ≠.

Certainly longer than typing !=, but far easier than looking up hex values.

Actually if you just hit "Alt" + "=" on the Mac it will insert the ≠

And on Linux, there is a Mac style keyboard available. I use that plus the compose key for maximum special character support.

With a standard keyboard, and an OS with support for compose sequences: compose + / + =

You can pay for ~/.Xmodmap maybe.

http://www.dyalog.com/apl-font-keyboard.htm

http://alf.nu/Unicode

Or when lacking unicode, #

When I read pound/hash/octothorpe it does not yield "not equal" in my mind. I would use "!=" and if someone else used "#" I would struggle to understand its meaning.

It was quite common in Niklaus Wirth languages, for example:

    PROCEDURE & Init(id: LONGINT);
    BEGIN
        IF id # NofPhilo-1 THEN
            first := id; second := (id+1)
        ELSE
            first := 0; second := NofPhilo-1
        END
    END Init;

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