Maintenance script: Automated internal link correction

2016-02-24T23:53:36Z

Automated internal link correction

← Older revision		Revision as of 23:53, 24 February 2016
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	'''Right Triangle Hypotenuse'''		'''Right Triangle Hypotenuse'''

	You can get the hypotenuse of a right triangle by using [[TI-BASIC:~~R►Pr(~~\|R►Pr(]]a,b), where a and b are the legs of a right triangle, or [[TI-BASIC:Abs\|Abs(]]a+b''i'', where a and b are the legs of a right triangle and ''i'' is the imaginary i.		You can get the hypotenuse of a right triangle by using [[TI-BASIC:R_Pr\|R►Pr(]]a,b), where a and b are the legs of a right triangle, or [[TI-BASIC:Abs\|Abs(]]a+b''i'', where a and b are the legs of a right triangle and ''i'' is the imaginary i.

	'''Dividing by 100'''		'''Dividing by 100'''

Maintenance script: Initial automated import

2016-02-24T18:06:53Z

Initial automated import

New page

When contributing a tip or trick, please follow these guidelines:

# A tip/trick about using a command should only be included if it is undocumented or not well-known.
# A tip/trick should have some practical application as part of a program, and not just be something trivial.
# A tip/trick about making a program more efficient generally belongs on the [[TI-BASIC:Optimize|optimization]] page.
# A tip/trick should be thoroughly explained and tested to make sure others can use it correctly.

<div style="margin-bottom:30px;">
----
</div>

'''Eliminate Annoying Things'''

If you want you to get rid of the “Done” message after you exit your program you can place some text or just a single double-quote on the last line of your program. Another option is to use the [[TI-BASIC:Output|Output(]] command, which has the benefit of not moving the cursor to the second line.

:ClrHome
:Output(4,4,"Some Text
:"

Another annoying thing is the run indicator that appears in the upper right corner of the screen. You can get rid of the run indicator by using Text(-1,0,90," " or Output(1,16," " (on the home screen) in a [[TI-BASIC:Getkey|GetKey]] loop:

:Repeat Ans
:Text(-1,0,90," // 1 space
:getKey→K
:End

'''Home Screen Text on Graph Screen'''

To get home screen font on the graph screen (except on the regular TI-83) you should place '-1' at the beginning of the [[TI-BASIC:Text|Text(]] command:

:Text(-1,Y,X,"Text

'''Digits in a Number'''

To find out the number of digits in a whole number (i.e., a number without decimals), use the [[TI-BASIC:Log|Log(]] function. An [[TI-BASIC:Abs)|Abs)]] function prevents a domain error when taking the logarithm of a negative number:

:1+int(log(abs(#

'''Empty Variables'''

You can create an empty string with "→Str1, and an empty list with the [[TI-BASIC:Clrlist|ClrList]] command.

'''Displaying Quotes and Store'''

Without storing them to a special string, you cannot usually display quotation marks (") and the [[TI-BASIC:Store|Store]] command (→). However, you can mimic these respectively in the [[TI-BASIC:Text|Text(]] command by using two apostrophes (' '), and two subtract signs and a greater than sign (—>).

'''Right Triangle Hypotenuse'''

You can get the hypotenuse of a right triangle by using [[TI-BASIC:R►Pr(|R►Pr(]]a,b), where a and b are the legs of a right triangle, or [[TI-BASIC:Abs|Abs(]]a+b''i'', where a and b are the legs of a right triangle and ''i'' is the imaginary i.

'''Dividing by 100'''

Using the program editor, you can place the [[TI-BASIC:Percent|%]] symbol directly into the code as a replacement for dividing by 100. This saves a few bytes each time you use it.

Using the [[TI-BASIC:Sub|Sub(]] command, if only one argument is given and it contains an expression that evaluates to a real, complex, or list of numbers, the argument will be divided by 100.

:sub(225
2.25

'''Turn the Screen Black'''

If your window is set up so that Xscl < ΔX and Yscl < ΔY, you can use [[TI-BASIC:Gridon|GridOn]] to make the entire screen black. You should note, however, that is rather slow.
You can also use [[TI-BASIC:Shade|Shade(]] to go faster.

:Shade(Ymin,Ymax

'''Inputting Coordinates'''

Most programmers know the normal syntax for Input, but it can be used alone without any arguments. This simply displays a little "+" on the graph screen, along with the coordinates on the bottom. The plus symbol can be moved horizontally or vertically to a certain coordinate, and the command ends by pressing ENTER. The coordinates are then stored to x and y, respectively.

:Input

'''Faster Circles'''

On the TI-83+ and above, the [[TI-BASIC:Circle|Circle(]] command has an alternate syntax. When a complex list such as {i} is added as the 4th argument, "fast circle" mode will be turned on, which uses the symmetries of a circle to save on trig calculations, and draws a circle in only 30% of the time it would normally take.

:Circle(0,0,5,{i

'''Extra Characters'''

Although the extra characters are only available through an [[TI-BASIC:Assembly|Assembly]] program, once you have them you can store them to a string and then use the string in a program with no problems. The characters include lowercase letters and ASCII characters (such as @, &, #, $, and international characters like ä).

'''Strange Control Flow'''

There are a few cases of strange [[TI-BASIC:Controlflow|control flow]], where you can use [[TI-BASIC:If|If]] conditionals by themselves, or together with [[TI-BASIC:While|loops]] and/or [[TI-BASIC:Delvar|DelVar]], to create some interesting results. The Disp commands tell the input conditions under which they will be executed.

* The dangling else (i.e, the executed statement itself is a conditional)

:If A:If B:Disp "B or not(A)

:If A:Then
:Disp "A
:If B:Else
:Disp "not(A) or not(B)
:End

* Misusing the [[TI-BASIC:Delvar|DelVar]] bug that occurs when chaining an [[TI-BASIC:If|If]], [[TI-BASIC:Else|Else]], or [[TI-BASIC:End|End]] command to the end

:If A:DelVar XIf 0
:Disp "not(A)

:If A:Then
:Disp "A
:If B:DelVar XElse
:Disp "A and not(B)
:End

'''Running Programs from Assembly Shells'''

As a matter of convenience, you can run your TI-Basic program from an [[TI-BASIC:Asmshells|assembly shell]]. DoorsCS 6 will automatically display all programs, but you need to place a colon (":") as the first line of your program for MirageOS to recognize it. However, it should be noted that there is no guarantee that your program will work correctly when run by a shell.

'''Moving Setup to Program End'''

If you have a large program where speed is at a premium, then you want the main program loop as close to the beginning of the program as possible. Since [[TI-BASIC:Setup|program setup]] is usually the code that is at the beginning of the program, this means that you should move it to the end of the program and then jump to it using a [[TI-BASIC:Goto|Goto]].

:99→I
:Goto 0
…
:Lbl 0
:ClrDraw
:ZStandard
:ZInteger
:Menu(" FROGGER v1.0 ","PLAY",1,"HELP",2,"EXIT",3

'''Self-Modifying Lists'''

Formulas that return a single real number can stored and used in many ways when stored to a graphing variable such as u:

"5X+1->Y1
Disp Y1(2 ;11
"X^2+2X+1->u
Disp solve(u,X,0 ;1

However, for formulas that return a list of numbers, lists can be used in the same way:

randIntNoRep(1,10->L1
Disp L1 ;{4,2,5,8,10,1,3,7,9,6
Disp L1 ;{9,2,6,3,10,7,1,8,4,5[[Category:TI-BASIC]]
[[Category:TIBD]]

TI-BASIC:Tipstricks - Revision history

Maintenance script: Automated internal link correction

Maintenance script: Initial automated import