Difference between revisions of "$rand"
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| − | Returns a random value depending upon what values you give the | + | Returns a random value depending upon what values you give the identifier. |
$rand(v1,v2) | $rand(v1,v2) | ||
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'''''Note''''': | '''''Note''''': | ||
| − | + | A design flaw in the way mIRC handles the $rand identifier means you can not give ''v1'' a value of ''1'' and ''v2'' a value of ''A'' and expect a result of a character between ascii value 49 and 65. | |
| − | + | To accomplish this, please check the examples below. | |
| − | + | ||
| − | + | Also note, if you do not give a parameter as an integer the value is [[$ceil|rounded up]]. | |
| − | + | $rand can not handle negative numbers. | |
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$rand(A,Z) ;; Returns a character between ''A'' and ''Z'' | $rand(A,Z) ;; Returns a character between ''A'' and ''Z'' | ||
$rand(A,z) ;; Returns a character between ''A'' and ''z'' | $rand(A,z) ;; Returns a character between ''A'' and ''z'' | ||
| − | ''Note'': the above example returns A-Z and a-z and also, [\]^_` which are the | + | ''Note'': the above example returns A-Z and a-z and also, [\]^_` which are the characters between Z and a. Characters 91-96. |
| Line 34: | Line 32: | ||
;;Make sure $rand2 is called and not /rand2 | ;;Make sure $rand2 is called and not /rand2 | ||
[[if]] (![[$isid]]) { return [[$null]] } | [[if]] (![[$isid]]) { return [[$null]] } | ||
| − | [[If-Then-Else|else]] { echo [[$color]](Info) -atg rand alias can only be used as an | + | [[If-Then-Else|else]] { echo [[$color]](Info) -atg rand alias can only be used as an identifier. ex: $rand2(1,10) | [[return]] } |
;;Make sure we have two parameters. | ;;Make sure we have two parameters. | ||
| − | if ($1 && $2) { return [[$chr]]($rand([[$asc]]($1),$asc($2))) } | + | if ($1 && $2) { return [[$chr]]($rand([[$asc]]($1),$asc($2))) } ;;Gets the ascii value off $1 and $2 then gets a random value between those and returns its $chr() |
;;If $1 or $2 is null return nothing. | ;;If $1 or $2 is null return nothing. | ||
| Line 43: | Line 41: | ||
} | } | ||
| − | == Also | + | == See Also == |
* [[$chr]] | * [[$chr]] | ||
* [[$asc]] | * [[$asc]] | ||
| + | * [[$rand_replacement_script|An improved $rand script]] | ||
[[Category:Text and Number Identifiers]] | [[Category:Text and Number Identifiers]] | ||
Latest revision as of 10:05, 2 July 2007
Returns a random value depending upon what values you give the identifier.
$rand(v1,v2)
If v1 and v2 is a numerical value, a number from v1 to v2 is returned. If both parameters v1 and v2 are not a numerical value both parameters are taken as their ascii value and the random result is returned as a character.
Note:
A design flaw in the way mIRC handles the $rand identifier means you can not give v1 a value of 1 and v2 a value of A and expect a result of a character between ascii value 49 and 65.
To accomplish this, please check the examples below.
Also note, if you do not give a parameter as an integer the value is rounded up. $rand can not handle negative numbers.
Examples
$rand(1,100) ;; Returns a value between 1 and 100. $rand(A,Z) ;; Returns a character between A and Z $rand(A,z) ;; Returns a character between A and z
Note: the above example returns A-Z and a-z and also, [\]^_` which are the characters between Z and a. Characters 91-96.
var %i = One,Two,Words Three and Four,Five var %num = $numtok(%i,44) ;; Returns 4 since there is for tokens delimited by a comma $chr(44). var %rand = $rand(1,%num) ;; Returns a random number from 1 to 4. echo -ag $gettok(%i,%rand,44) ;; Returns a random token from %i.
The Example below handles situations where a numerical and a non-numerical
alias rand2 {
;;Make sure $rand2 is called and not /rand2
if (!$isid) { return $null }
else { echo $color(Info) -atg rand alias can only be used as an identifier. ex: $rand2(1,10) | return }
;;Make sure we have two parameters.
if ($1 && $2) { return $chr($rand($asc($1),$asc($2))) } ;;Gets the ascii value off $1 and $2 then gets a random value between those and returns its $chr()
;;If $1 or $2 is null return nothing.
return $null
}
