1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# tests with blank subscripts, indexed and associative
echo 1. indexed:
a[0]=0 a[1]=1
v=" "
echo reference:
echo 1. ${a[ ]}
echo 2. ${a[' ']}
echo 3. "${a[ ]}"
echo 4. ${a[$v]}
echo 5. ${a["$v"]}
echo 6. "${a[$v]}"
echo assignment:
echo -n 1. ; a[ ]=10 ; typeset -p a ; a[0]=0
echo -n 2. ; a[" "]=11 ; typeset -p a ; a[0]=0
echo -n 3. ; a[$v]=12 ; typeset -p a ; a[0]=0
echo -n 4. ; a["$v"]=13 ; typeset -p a ; a[0]=0
echo arithmetic:
echo -n 1. ; (( a[ ]=10 )); typeset -p a ; a[0]=0
echo -n 2. ; (( a[" "]=11 )); typeset -p a ; a[0]=0
echo -n 3. ; (( a[$v]=12 )); typeset -p a ; a[0]=0
echo -n 4. ; (( a["$v"]=13 )); typeset -p a ; a[0]=0
echo -n 5. ; let "a[ ]=10" ; typeset -p a ; a[0]=0
echo -n 6. ; let "a[\" \"]=11" ; typeset -p a ; a[0]=0
echo -n 7. ; let "a[$v]=12" ; typeset -p a ; a[0]=0
echo -n 8. ; let "a[\"$v\"]=13" ; typeset -p a ; a[0]=0
unset -v a v
echo 2. associative:
shopt -s assoc_expand_once
typeset -A a
a[0]=0 a[1]=1
v=" "
echo reference:
echo 1. ${a[ ]}
echo 2. ${a[' ']}
echo 3. "${a[ ]}"
echo 4. ${a[$v]}
echo 5. ${a["$v"]}
echo 6. "${a[$v]}"
echo assignment:
echo -n 1. ; a[ ]=10 ; typeset -p a ; a[0]=0
echo -n 2. ; a[" "]=11 ; typeset -p a ; a[0]=0
echo -n 3. ; a[$v]=12 ; typeset -p a ; a[0]=0
echo -n 4. ; a["$v"]=13 ; typeset -p a ; a[0]=0
echo arithmetic:
echo -n 1. ; (( a[ ]=10 )); typeset -p a ; a[0]=0
echo -n 2. ; (( a[" "]=11 )); typeset -p a ; a[0]=0
echo -n 3. ; (( a[$v]=12 )); typeset -p a ; a[0]=0
echo -n 4. ; (( a["$v"]=13 )); typeset -p a ; a[0]=0
echo -n 5. ; let "a[ ]=10" ; typeset -p a ; a[0]=0
echo -n 6. ; let "a[\" \"]=11" ; typeset -p a ; a[0]=0
echo -n 7. ; let "a[$v]=12" ; typeset -p a ; a[0]=0
echo -n 8. ; let "a[\"$v\"]=13" ; typeset -p a ; a[0]=0
|
