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Full Discussion: How To Sort Array of Hashes ??
Top Forums Shell Programming and Scripting How To Sort Array of Hashes ?? Post 71239 by cbkihong on Monday 9th of May 2005 09:31:36 AM
Old 05-09-2005
Perl's sort function is immensely powerful (and somewhat difficult to explain) that lets you sort in any way you desire. Theoretically you can put the condition (the comparator) in the sort {} block to generate a custom ordering for your case. But your question is not precise. And you cannot simply say keep 32 and 18 together, because what should be the ordering of other array items with respect to 32 and 18, respectively? And the order of 32 and 18? If these questions are not defined, the condition in the sort {} block will not be accurate to establish a total ordering, and the sorted results will then be non-deterministic (i.e. simply wrong).

Mathematically speaking, given a total of n items to sort, you need to define all possible permutations of any two items in the block, i.e. n * n, and the ordering should be absolutely consistent. So, if you define a certain item x(i) -> 32 and 32 -> 18, the condition in the block should never, ever, generate the order 18 -> x(i), or any other items preceding x(i).

In general, if a given sort order is not intuitive, and you cannot specify an algorithm to establish the total ordering, I will suggest getting the normally sorted results and manipulate the rest yourself with another array. For this, I guess you should try to do this yourself.
 

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LEARN ABOUT REDHAT

xmscalesetticks

XmScaleSetTicks(library call)											     XmScaleSetTicks(library call)

NAME

       XmScaleSetTicks -- A Scale function that controls tick marks

SYNOPSIS

       #include <Xm/Scale.h>
       void XmScaleSetTicks(
       Widget scale,
       int big_every,
       Cardinal num_medium,
       Cardinal num_small,
       Dimension size_big,
       Dimension size_medium,
       Dimension size_small);

DESCRIPTION

       XmScaleSetTicks	controls the number, location, and size of the tick marks on a Scale. Each tick mark is a SeparatorGadget oriented perpen-
       dicular to the Scale's orientation. For example, if the Scale is oriented horizontally, the tick marks will be oriented vertically.

       If you specify tick marks for a Scale and then change the Scale's orientation, you will have to do the following:

	  o  Remove all the tick marks. To remove tick marks from a Scale, you must destroy  (with  XtDestroyChildren)	the  SeparatorGadget  tick
	     marks.  The first two children of a Scale are its title and scroll bar, and all additional children are tick marks.

	  o  Recreate the tick marks by calling XmScaleSetTicks.

       scale	 Specifies the Scale widget ID that is getting the tick marks.

       big_every Specifies the number of scale values between big ticks.

       num_medium
		 Specifies the number of medium ticks between big values.

       num_small Specifies the number of small ticks between medium values.

       size_big  Specifies the size (either width or height) of the big ticks.

       size_medium
		 Specifies the size (either width or height) of the medium ticks.

       size_small
		 Specifies the size (either width or height) of the small ticks.

       For a complete definition of Scale and its associated resources, see XmScale(3).

RELATED

       XmScale(3).

														     XmScaleSetTicks(library call)
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