FindPreviousItemNumber (UnicodeNamedArraylist function) - Revision history

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Redirected page to FindPreviousItemNumber (GenericNamedArraylist function)

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	~~<span style="font-size:120%; color:black"><b><section begin=dpl_desc/>Return n<section end=dpl_desc/></b></span>~~		#REDIRECT [[FindPreviousItemNumber (GenericNamedArraylist function)]]
	~~[[Category:UnicodeNamedArraylist methods\|FindPreviousItemNumber function]]~~
	~~<!--DPL?? Category:UnicodeNamedArraylist methods\|FindPreviousItemNumber function: Return n-->~~
	~~<p>~~
	~~FindPreviousItemNumber is a member of the [[UnicodeNamedArraylist class]].~~
	~~</p>~~

	~~This function searches “backward” in the UnicodeNamedArraylist to find and~~
	~~return the item number of the next item that matches a specified criterion.~~
	~~The criterion is supplied by the [[SelectionCriterion class\|SelectionCriterion]] object~~
	~~that is a required FindPreviousItemNumber parameter.~~
	~~If no item satisfies the criterion,~~
	~~the method returns a zero.~~
	~~==Syntax==~~
	~~%itemnum = %unamrayl:FindPreviousItemNumber(criterion -~~
	~~[, Start=itemnum])~~
	~~===Syntax Terms===~~
	~~<dl>~~
	~~<dt><i>%itemnum</i>~~
	~~<dd>A numeric variable to contain the item number of the~~
	~~item that is located by the search.~~
	~~<dt><i>%unamrayl</i>~~
	~~<dd>A UnicodeNamedArraylist object.~~
	~~<dt><i>criterion</i>~~
	~~<dd>A SelectionCriterion object, which is a relational expression that is~~
	~~applied to a ''%unamrayl'' item value to determine~~
	~~whether the value satisfies the expression.~~
	~~The expression consists of a function, an operator, and a User Language intrinsic type~~
	~~(numeric, string, or Unicode) value.~~

	~~For example, <tt>LT(this, 101)</tt> is the~~
	~~criterion <tt>this</tt> <tt><</tt> <tt>101</tt>, where~~
	~~<tt>this</tt> is an identity function that simply returns the item's value.~~
	~~The item number of the first item tested by FindPreviousItemNumber that satisfies~~
	~~this expression is the method's return value.~~

	~~The function in the criterion is~~
	~~a method value (a method or class member name literal, or a method variable)~~
	~~for a method~~
	~~that operates on items of the type specified on the ''%unamrayl''~~
	~~declaration and that returns an intrinsic value.~~
	~~This is described further in "[[SelectionCriterion class~~#~~Specifying a SelectionCriterion's parameters\|Specifying a SelectionCriterion's parameters]]".~~
	~~<dt><b>Start=</b><i> itemnum</i>~~
	~~<dd>The number of the item ''before'' which to begin the search.~~
	~~If the ''itemnum'' value of Start is 4, item 3 is the first item considered.~~
	~~The value of Start may be 1 through one plus the number of items in~~
	~~the UnicodeNamedArraylist.~~
	~~For a collection of three items, ''itemnum'' may be 1, 2, 3, or 4.~~

	~~This is an optional argument, and it defaults to one plus the number of items in~~
	~~the UnicodeNamedArraylist.~~
	~~If you specify a value, the parameter name <tt>Start</tt> is required.~~

	~~</dl>~~
	~~==Usage Notes==~~
	~~<ul>~~
	~~<li>If the value of Start is not in the range of 2 through one plus the number~~
	~~of items in the UnicodeNamedArraylist, the request is cancelled.~~
	~~If the value of Start is 1, no item can be found and~~
	~~the method returns a zero.~~
	~~<li>~~[[~~FindNextItemNumber (UnicodeNamedArraylist function)\|FindNextItemNumber]]~~
	~~is identical to~~ FindPreviousItemNumber ~~except that it searches forward in~~
	~~the UnicodeNamedArraylist.~~
	~~</ul>~~
	~~==Examples==~~

	~~See the [[FindNextItemNumber~~ (~~UnicodeNamedArraylist~~ function)~~#Examples\|FindNextItemNumber example~~]] ~~for an example with a FindPreviousItemNumber call.~~

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2011-01-05T19:57:42Z

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198.242.244.47: Created page with "
Return n
[[Category:UnicodeNamedArraylist methods|FindPreviousItemNumber f..."

2011-01-05T19:39:32Z

Created page with "<section begin=dpl_desc/>Return n<section end=dpl_desc/> [[Category:UnicodeNamedArraylist methods|FindPreviousItemNumber f..."

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<section begin=dpl_desc/>Return n<section end=dpl_desc/>
[[Category:UnicodeNamedArraylist methods|FindPreviousItemNumber function]]


FindPreviousItemNumber is a member of the [[UnicodeNamedArraylist class]].


This function searches “backward” in the UnicodeNamedArraylist to find and
return the item number of the next item that matches a specified criterion.
The criterion is supplied by the [[SelectionCriterion class|SelectionCriterion]] object
that is a required FindPreviousItemNumber parameter.
If no item satisfies the criterion,
the method returns a zero.
==Syntax==
%itemnum = %unamrayl:FindPreviousItemNumber(criterion -
[, Start=itemnum])
===Syntax Terms===
<dl>
<dt>%itemnum
<dd>A numeric variable to contain the item number of the
item that is located by the search.
<dt>%unamrayl
<dd>A UnicodeNamedArraylist object.
<dt>criterion
<dd>A SelectionCriterion object, which is a relational expression that is
applied to a ''%unamrayl'' item value to determine
whether the value satisfies the expression.
The expression consists of a function, an operator, and a User Language intrinsic type
(numeric, string, or Unicode) value.

For example, <tt>LT(this, 101)</tt> is the
criterion <tt>this</tt> <tt><</tt> <tt>101</tt>, where
<tt>this</tt> is an identity function that simply returns the item's value.
The item number of the first item tested by FindPreviousItemNumber that satisfies
this expression is the method's return value.

The function in the criterion is
a method value (a method or class member name literal, or a method variable)
for a method
that operates on items of the type specified on the ''%unamrayl''
declaration and that returns an intrinsic value.
This is described further in "[[SelectionCriterion class#Specifying a SelectionCriterion's parameters|Specifying a SelectionCriterion's parameters]]".
<dt>Start= itemnum
<dd>The number of the item ''before'' which to begin the search.
If the ''itemnum'' value of Start is 4, item 3 is the first item considered.
The value of Start may be 1 through one plus the number of items in
the UnicodeNamedArraylist.
For a collection of three items, ''itemnum'' may be 1, 2, 3, or 4.

This is an optional argument, and it defaults to one plus the number of items in
the UnicodeNamedArraylist.
If you specify a value, the parameter name <tt>Start</tt> is required.

</dl>
==Usage Notes==
<ul>
<li>If the value of Start is not in the range of 2 through one plus the number
of items in the UnicodeNamedArraylist, the request is cancelled.
If the value of Start is 1, no item can be found and
the method returns a zero.
<li>[[FindNextItemNumber (UnicodeNamedArraylist function)|FindNextItemNumber]]
is identical to FindPreviousItemNumber except that it searches forward in
the UnicodeNamedArraylist.
</ul>
==Examples==

See the [[FindNextItemNumber (UnicodeNamedArraylist function)#Examples|FindNextItemNumber example]] for an example with a FindPreviousItemNumber call.

FindPreviousItemNumber (UnicodeNamedArraylist function) - Revision history

Dme: Redirected page to FindPreviousItemNumber (GenericNamedArraylist function)

Admin: 1 revision

198.242.244.47: Created page with "Return n [[Category:UnicodeNamedArraylist methods|FindPreviousItemNumber f..."

198.242.244.47: Created page with "
Return n
[[Category:UnicodeNamedArraylist methods|FindPreviousItemNumber f..."