Full Discussion: How to generate the list?
Top Forums Shell Programming and Scripting How to generate the list? Post 302408368 by drl on Monday 29th of March 2010 09:47:20 AM
Old 03-29-2010
Hi.

With a handy perl module:
Code:
#!/usr/bin/perl

# @(#) p2	Demonstrate combinations of strings.

use Math::Combinatorics;
use strict;
use warnings;

my @n = qw(e x p e c t);
print "combinations of 2 from: " . join( " ", @n ) . "\n";
print join( "\n", map { join " ", @$_ } combine( 2, @n ) ), "\n";
print "\n";

print "combinations of 2 from (non-replicated): " . join( " ", @n ) . "\n";
my (%hash) = map { $_, $_ } @n;
print join( "\n", map { join " ", @$_ } combine( 2, sort( keys(%hash) ) ) ),
  "\n";
print "\n";

producing:
Code:
% ./p2
combinations of 2 from: e x p e c t
e x
e p
e e
e c
e t
x p
x e
x c
x t
p e
p c
p t
e c
e t
c t

combinations of 2 from (non-replicated): e x p e c t
c e
c p
c x
c t
e p
e x
e t
p x
p t
x t

cheers, drl
 

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Tk_GetJoinStyle(3)					       Tk Library Procedures						Tk_GetJoinStyle(3)

__________________________________________________________________________________________________________________________________________________

NAME
Tk_GetJoinStyle, Tk_NameOfJoinStyle - translate between strings and join styles SYNOPSIS
#include <tk.h> int Tk_GetJoinStyle(interp, string, joinPtr) const char * Tk_NameOfJoinStyle(join) ARGUMENTS
Tcl_Interp *interp (in) Interpreter to use for error reporting. const char *string (in) String containing name of join style: one of "bevel", "miter", or "round". int *joinPtr (out) Pointer to location in which to store X join style corresponding to string. int join (in) Join style: one of JoinBevel, JoinMiter, JoinRound. _________________________________________________________________ DESCRIPTION
Tk_GetJoinStyle places in *joinPtr the X join style corresponding to string, which will be one of JoinBevel, JoinMiter, or JoinRound. Join styles are typically used in X graphics contexts to indicate how adjacent line segments should be joined together. See the X documentation for information on what each style implies. Under normal circumstances the return value is TCL_OK and interp is unused. If string does not contain a valid join style or an abbrevia- tion of one of these names, then an error message is stored in interp->result, TCL_ERROR is returned, and *joinPtr is unmodified. Tk_NameOfJoinStyle is the logical inverse of Tk_GetJoinStyle. Given a join style such as JoinBevel it returns a statically-allocated string corresponding to join. If join is not a legal join style, then "unknown join style" is returned. KEYWORDS
bevel, join style, miter, round Tk Tk_GetJoinStyle(3)

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