Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

We have a "Hide" tag, which lets you enter your answer but people have to click on a button to see it. This lets other people have a go without seeing your answer. It doesn't *really* hide it, but does remove it by one click.

You use it like this (use [] not {} ):

My answer {hide=is this}42 !{/hide}

My answer

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

Not a bug ... just lack of a feature

I have not BBCode'd it ... I just went for straight text.

But I can put that on my list of features to add if you like ...

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

Hey, this is really neat! Good idea.

**igloo** **myrtilles** **fourmis**

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

kylekatarn wrote:

"If the rest of the forum supports BBcode, why don't hide tags?"

Quite right, but not as simple as one would imagine. However I am close to a solution.

So, if all hide tags suddenly look silly - that'll be me!

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

OK, you can now use bbcode in "hide" tags - please tell me how you get on.

(But don't use bbcode on the button text, I can't get that to work because of html limitations, hence the smiley on this button isn't rendered, but it works on the message page )

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**justlookingforthemoment****Moderator**- Registered: 2005-05-26
- Posts: 2,161

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

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**justlookingforthemoment****Moderator**- Registered: 2005-05-26
- Posts: 2,161

Now that all the buttons work, mathsy's signature button doesn't seem to be...

It displays the tags and all the writing instead.

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**justlookingforthemoment****Moderator**- Registered: 2005-05-26
- Posts: 2,161

Why do all the posts with hide tags in them have things like this

Mathsyperson justlooking kylekatarn MathsIsFun

(495==641) (495==495) (495==895) (495==2)

above them?

We all seem to have our own special number! Have they always been there or is it a new improvement...?

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

Interesting ... I will take a look at that!

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**darthradius****Member**- Registered: 2005-11-28
- Posts: 97

Testing..testing......one..two......one..two.......

The shortest math joke...

The greatest challenge to any thinker is stating the problem in a way that will allow a solution.

-Bertrand Russell

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**Jai Ganesh****Administrator**- Registered: 2005-06-28
- Posts: 47,401

Yes, the shortest......

and do you know the worst tongue twister in English language?

'The sixth sick Sheik's sixt sheep's sick.'

I ain't sure 'bout that!

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Jai Ganesh****Administrator**- Registered: 2005-06-28
- Posts: 47,401

And one of the shortest pangrams?

'Pack my box with five dozen liquor jugs'.

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

The shortest tongue twister is actually 'sixish'. It only works if you trying saying it lots of times though. Plus, it's probably not a real word. At least it's very short.

Why did the vector cross the road?

It wanted to be normal.

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**irspow****Member**- Registered: 2005-11-24
- Posts: 1,055

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

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**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

IPBLE: Increasing Performance By Lowering Expectations.

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

I was messing around with some BBCode and found this (highlight the post):

A new way to hide stuff!

Of course, that only works if you assume that everyone uses SleekBlue, but still, it makes a change from hide tags.

Why did the vector cross the road?

It wanted to be normal.

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**Ricky****Moderator**- Registered: 2005-12-04
- Posts: 3,791

I didn't believe you till I tried it, and you're right, it doesn't work in different styles. It's a fairly simple task to get the style the person is viewing, then change the font to the background color of the post. Weird.

"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."

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**justlookingforthemoment****Moderator**- Registered: 2005-05-26
- Posts: 2,161

I think I'm using oxygen. The text is almost the right colour, and blends in especially well if I tilt my screen down.

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**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

The exact colour is:

Red:204

Green:204

Blue:221

IPBLE: Increasing Performance By Lowering Expectations.

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**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

Which is hexademical #CCCCDD

*Last edited by krassi_holmz (2006-01-02 12:46:32)*

IPBLE: Increasing Performance By Lowering Expectations.

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**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

Can we hide other things?

n

----

\ n(n+1)

| i = ---------

/ 2

----

i=1

← → ↔ ↤ ↦ ↘ ↗ ↑ ↓ ↕ ⇄ ⇐ ⇒ ⇔ ⇑ ⇓ ⇀ ⇌
⋯ ⋮ ⋰ ⋱ ─ │ ︶ ︵ ︸ ︷

*Last edited by krassi_holmz (2006-01-02 13:01:42)*

IPBLE: Increasing Performance By Lowering Expectations.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

And I actually looked at doing that when I developed the original hide tag.

It *may* be possible to match the user's style color, but that is in a stylesheet, so not available automatically (I would have to hard-code the colors, making upgrades complicated)

Why I use a separate page for the hide tag is so that I can (in a future upgrade) actually block them until the puzzlemaster allows.

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**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,905

Can you?

Block this:

IPBLE: Increasing Performance By Lowering Expectations.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,713

I can't block it yet!

Only because I haven't figured out a good "trigger" for blocking or not.

I thought that the original author of the topic could include a keyword in the title, such as "Open Puzzle" or " - Current", and that would let my software know to disable all hide tags for that topic.

Suggestions welcome.

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