TrimLeft and TrimRight (String functions): Difference between revisions
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{{Template:String:TrimLeft and TrimRight subtitle}} | {{Template:String:TrimLeft and TrimRight subtitle}} | ||
These methods remove a specified number of bytes from the left or right end of a string. | These methods remove a specified number of bytes from the left or right end of a string. | ||
==Syntax== | ==Syntax== | ||
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===Syntax terms=== | ===Syntax terms=== | ||
<table class="syntaxTable"> | <table class="syntaxTable"> | ||
<tr><th>%outString</th><td> | <tr><th>%outString</th><td>Is the string that results from removing <var class="term">amount</var> bytes from the left or right of the method string object.</td></tr> | ||
<tr><th>string</th> | <tr><th>string</th> | ||
<td> | <td>The method string object from which bytes are removed.</td></tr> | ||
<tr><th>amount</th> | <tr><th>amount</th> | ||
<td> | <td>The number of bytes to remove from the left or right of the indicated string.</td></tr> | ||
</table> | </table> | ||
==Usage notes== | ==Usage notes== | ||
<ul> | |||
<li>An <var class="term">amount</var> of 0 results in the output string being set equal to the method string object. | |||
<li>A negative <var class="term">amount</var> or an <var class="term">amount</var> greater than 2<sup>31</sup> results in request cancellation. | |||
<li>An <var class="term">amount</var> greater than or equal to the length of the method string object results in the output string being set to a null string. | |||
<li><var>TrimLeft</var> accomplishes the same thing as <var>[[Substring (String function)|SubString]]</var> when used with just the starting position and without a length. While it might be a little bit more efficient than <var>SubString</var>, it's mainly available for completeness. | |||
<li><var>TrimRight</var> functionality can be achieved by using the <var>[[Left (String function)|Left]]</var> and <var>[[length (String function)|Length]]</var> functions but it is considerably more efficient and convenient. | |||
</ul> | |||
==Examples== | ==Examples== | ||
The following | |||
<p class="code">begin | |||
%ls is longstring | |||
%ls = 'Life is good':trimRight(1) | |||
printtext {~} = '{%ls}' | |||
%ls = 'Life is good':trimLeft(3) | |||
printtext {~} = '{%ls}' | |||
end | |||
</p> | |||
outputs | |||
<p class="output">%ls = 'Life is goo' | |||
%ls = 'e is good' | |||
</p> | |||
==See also== | ==See also== | ||
{{Template:String:TrimLeft footer}} | {{Template:String:TrimLeft footer}} | ||
Revision as of 13:19, 5 February 2011
Trim bytes from left or right of string (String class)
[Introduced in Sirius Mods 7.9]
These methods remove a specified number of bytes from the left or right end of a string.
Syntax
%outString = string:TrimLeft( amount)
%outString = string:TrimRight( amount)
Syntax terms
| %outString | Is the string that results from removing amount bytes from the left or right of the method string object. |
|---|---|
| string | The method string object from which bytes are removed. |
| amount | The number of bytes to remove from the left or right of the indicated string. |
Usage notes
- An amount of 0 results in the output string being set equal to the method string object.
- A negative amount or an amount greater than 231 results in request cancellation.
- An amount greater than or equal to the length of the method string object results in the output string being set to a null string.
- TrimLeft accomplishes the same thing as SubString when used with just the starting position and without a length. While it might be a little bit more efficient than SubString, it's mainly available for completeness.
- TrimRight functionality can be achieved by using the Left and Length functions but it is considerably more efficient and convenient.
Examples
The following
begin %ls is longstring %ls = 'Life is good':trimRight(1) printtext {~} = '{%ls}' %ls = 'Life is good':trimLeft(3) printtext {~} = '{%ls}' end
outputs
%ls = 'Life is goo' %ls = 'e is good'