Table< T > Class Template Reference

#include <tables.H>

Inheritance diagram for Table< T >:

List of all members.

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Detailed Description

template<class T>
class Table< T >

the Table class : 2-dimensional arrays

A 2-dimensional array of elements of type T may be defined using Tuple< Tuple<T> > M. It is even recommended when we want a "matrix with lines of different sizes". Elements may be accessed or modified via M(i)(j). Setting M.set_sep('
') assures that M displays quite well.

However, the operation of assignment, for example, is terribly slow and memory consuming. So we provide the Table class, which is optimized for this, and also improves various things like the way tables are displayed, the way elements are accessed, etc. This is achieved by defining a table of size (i,j) to be a tuple of size i*j together with a bunch of pointers to where the "lines" start.

The methods are similar to those of Tuple, so there are less comments.

Definition at line 256 of file tables.H.

Public Member Functions
	Table ()
	default constructor
	Table (long i, long j)
	constructor
	Table (const Table< T > &that)
	constructor
	~Table ()
	destructor: releases memory
void	resize (long i, long j)
	resize
void	copy (const Table< T > &that)
	copy from another table
void	steal (Table< T > &that)
	steal data
Table< T >	operator= (const Table< T > &that)
	assigment operator =
void	readline (long i, const Tuple< T > &line)
	loads a line from a Tuple
void	get_data_from_tuple_list (const list< Tuple< T > > &L)
T &	operator() (long i, long j)
	read or write data, eg x= M(i,j); or M(i,j)=5;
const T &	operator() (long i, long j) const
long	nlines () const
	current number of lines
long	ncols () const
	current number of rows
void	set_delim (char theleft, char theright)
	set delimiters (for display purposes)
Protected Member Functions
long	col_width () const
	width of the largest column
void	write_ptrs ()
	write "bookmarks"
Protected Attributes
T **	pdata
	pointers to the lines
long	nb_lines
	self-evident
long	nb_cols
	self-evident
char	left
	chars printed on the borders
char	right
	chars printed on the borders
Friends
ostream &	operator<< (ostream &os, const Table< T > &M)
	displays the table with neatly aligned columns

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Constructor & Destructor Documentation

template<class T> Table< T >::Table (   )  [inline]

default constructor sets the size to 1 line, 1 row.

template<class T> Table< T >::Table (  long  i, long  j )  [inline]

constructor Parameters: i=nb  of lines, j=nb of rows

template<class T> Table< T >::Table (  const Table< T > &  that  )  [inline]

constructor

template<class T> Table< T >::~Table (   )  [inline]

destructor: releases memory

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Member Function Documentation

template<class T> long Table< T >::col_width (   )  const [inline, protected]

width of the largest column for display purposes. Returns: the maximum width of an element, in chars. Definition at line 270 of file tables.H.

template<class T> void Table< T >::copy (  const Table< T > &  that  )  [inline]

copy from another table Definition at line 366 of file tables.H. Referenced by Table< Polynomial< K > >::operator=().

template<class T> long Table< T >::ncols (   )  const [inline]

current number of rows Definition at line 445 of file tables.H. Referenced by multiIdeal< K >::simplify().

template<class T> long Table< T >::nlines (   )  const [inline]

current number of lines Definition at line 443 of file tables.H. Referenced by DerivationAnalyzer::constant_subalgebra(), and HomFinder::set_hom_from_matrix().

template<class T> T& Table< T >::operator() (  long  i, long  j )  [inline]

read or write data, eg x= M(i,j); or M(i,j)=5; Definition at line 435 of file tables.H.

template<class T> Table<T> Table< T >::operator= (  const Table< T > &  that  )  [inline]

assigment operator = Definition at line 389 of file tables.H.

template<class T> void Table< T >::readline (  long  i, const Tuple< T > &  line )  [inline]

loads a line from a Tuple this assumes that "line" is large enough. Data is read to fill the specified line. Parameters: i:  number of the line to write data in line:  tuple to read data from Definition at line 402 of file tables.H.

template<class T> void Table< T >::resize (  long  i, long  j )  [inline]

resize Parameters: i:  new nb of lines, j:  new nb of cols Definition at line 343 of file tables.H. Referenced by DerivationAnalyzer::constant_subalgebra(), SW_Maker::create_regular_variables(), Chern_Maker::create_regular_variables(), Exponentiator< F_2 >::create_regular_variables(), multiIdeal< K >::grobnerize_with_coefficients(), and Ideal< F_2 >::grobnerize_with_coefficients().

template<class T> void Table< T >::set_delim (  char  theleft, char  theright )  [inline]

set delimiters (for display purposes) Definition at line 447 of file tables.H.

template<class T> void Table< T >::steal (  Table< T > &  that  )  [inline]

steal data Definition at line 376 of file tables.H. Referenced by Matrix< Polynomial< K > >::operator *=().

template<class T> void Table< T >::write_ptrs (   )  [inline, protected]

write "bookmarks" this fills in an array of pointers to the different "lines" in the table. Allows faster access. this assumes that pdata does not point to anything; a "new " operation is performed on pdata. Definition at line 296 of file tables.H. Referenced by Table< Polynomial< K > >::copy(), and Table< Polynomial< K > >::resize().

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Friends And Related Function Documentation

template<class T> ostream& operator<< (  ostream &  os, const Table< T > &  M )  [friend]

displays the table with neatly aligned columns Definition at line 452 of file tables.H.

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Member Data Documentation

template<class T> char Table< T >::left [protected]

chars printed on the borders Definition at line 263 of file tables.H. Referenced by Table< Polynomial< K > >::copy().

template<class T> long Table< T >::nb_cols [protected]

self-evident Definition at line 261 of file tables.H. Referenced by Table< Polynomial< K > >::copy(), Matrix< Polynomial< K > >::operator+=(), Matrix< Polynomial< K > >::operator-=(), and Table< Polynomial< K > >::steal().

template<class T> long Table< T >::nb_lines [protected]

self-evident Definition at line 261 of file tables.H. Referenced by Table< Polynomial< K > >::copy(), Matrix< Polynomial< K > >::operator+=(), Matrix< Polynomial< K > >::operator-=(), and Table< Polynomial< K > >::steal().

template<class T> T** Table< T >::pdata [protected]

pointers to the lines Definition at line 259 of file tables.H. Referenced by Table< Polynomial< K > >::steal().

template<class T> char Table< T >::right [protected]

chars printed on the borders Definition at line 263 of file tables.H. Referenced by Table< Polynomial< K > >::copy().

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The documentation for this class was generated from the following file:

• include/tables.H

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