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comparison doc/interpreter/strings.txi @ 19630:0e1f5a750d00

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maint: Periodic merge of gui-release to default.
author John W. Eaton <jwe@octave.org>
date Tue, 20 Jan 2015 10:24:46 -0500
parents efd5cf93013b 446c46af4b42
children 4197fc428c7d
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19626:37d37297acf8 19630:0e1f5a750d00
4 @c 4 @c
5 @c Octave is free software; you can redistribute it and/or modify it 5 @c Octave is free software; you can redistribute it and/or modify it
6 @c under the terms of the GNU General Public License as published by the 6 @c under the terms of the GNU General Public License as published by the
7 @c Free Software Foundation; either version 3 of the License, or (at 7 @c Free Software Foundation; either version 3 of the License, or (at
8 @c your option) any later version. 8 @c your option) any later version.
9 @c 9 @c
10 @c Octave is distributed in the hope that it will be useful, but WITHOUT 10 @c Octave is distributed in the hope that it will be useful, but WITHOUT
11 @c ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 @c ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 @c FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 @c FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 @c for more details. 13 @c for more details.
14 @c 14 @c
15 @c You should have received a copy of the GNU General Public License 15 @c You should have received a copy of the GNU General Public License
16 @c along with Octave; see the file COPYING. If not, see 16 @c along with Octave; see the file COPYING. If not, see
17 @c <http://www.gnu.org/licenses/>. 17 @c <http://www.gnu.org/licenses/>.
18 18
19 @node Strings 19 @node Strings
41 Since the single-quote mark is also used for the transpose operator 41 Since the single-quote mark is also used for the transpose operator
42 (@pxref{Arithmetic Ops}) but double-quote marks have no other purpose in Octave, 42 (@pxref{Arithmetic Ops}) but double-quote marks have no other purpose in Octave,
43 it is best to use double-quote marks to denote strings. 43 it is best to use double-quote marks to denote strings.
44 44
45 Strings can be concatenated using the notation for defining matrices. For 45 Strings can be concatenated using the notation for defining matrices. For
46 example, the expression 46 example, the expression
47 47
48 @example 48 @example
49 [ "foo" , "bar" , "baz" ] 49 [ "foo" , "bar" , "baz" ]
50 @end example 50 @end example
51 51
52 @noindent 52 @noindent
80 @result{} [ 92 110 ] 80 @result{} [ 92 110 ]
81 @end group 81 @end group
82 @end example 82 @end example
83 83
84 Here is a table of all the escape sequences used in Octave (within 84 Here is a table of all the escape sequences used in Octave (within
85 double quoted strings). They are the same as those used in the C 85 double quoted strings). They are the same as those used in the C
86 programming language. 86 programming language.
87 87
88 @table @code 88 @table @code
89 @item \\ 89 @item \\
90 Represents a literal backslash, @samp{\}. 90 Represents a literal backslash, @samp{\}.
285 285
286 @example 286 @example
287 @group 287 @group
288 char ("orange", "green", "", "red") 288 char ("orange", "green", "", "red")
289 @result{} orange 289 @result{} orange
290 green 290 green
291 291
292 red 292 red
293 @end group 293 @end group
294 294
295 @group 295 @group
296 strvcat ("orange", "green", "", "red") 296 strvcat ("orange", "green", "", "red")
297 @result{} orange 297 @result{} orange
298 green 298 green
299 red 299 red
300 @end group 300 @end group
301 @end example 301 @end example
302 302
303 @item All string concatenation functions except @code{cstrcat} also accept cell 303 @item All string concatenation functions except @code{cstrcat} also accept cell
304 array data (@pxref{Cell Arrays}). @code{char} and 304 array data (@pxref{Cell Arrays}). @code{char} and
306 concatenates within the cells of the cell arrays: 306 concatenates within the cells of the cell arrays:
307 307
308 @example 308 @example
309 @group 309 @group
310 char (@{"red", "green", "", "blue"@}) 310 char (@{"red", "green", "", "blue"@})
311 @result{} red 311 @result{} red
312 green 312 green
313 313
314 blue 314 blue
315 @end group 315 @end group
316 316
317 @group 317 @group
318 strcat (@{"abc"; "ghi"@}, @{"def"; "jkl"@}) 318 strcat (@{"abc"; "ghi"@}, @{"def"; "jkl"@})
319 @result{} 319 @result{}
412 @example 412 @example
413 @group 413 @group
414 quote = ... 414 quote = ...
415 "First things first, but not necessarily in that order"; 415 "First things first, but not necessarily in that order";
416 quote( quote == " " ) = "_" 416 quote( quote == " " ) = "_"
417 @result{} quote = 417 @result{} quote =
418 First_things_first,_but_not_necessarily_in_that_order 418 First_things_first,_but_not_necessarily_in_that_order
419 @end group 419 @end group
420 @end example 420 @end example
421 421
422 For more complex manipulations, such as searching, replacing, and 422 For more complex manipulations, such as searching, replacing, and