mirror of https://github.com/n-hys/bash.git
80 lines
1.7 KiB
Plaintext
80 lines
1.7 KiB
Plaintext
# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# case 1: readonly modifying local scalar variables
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o1() {
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local i1 j1
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readonly i1=$1
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readonly j1="1 2 3"
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echo "in o1 (readonly modifying local scalars):"
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declare -p i1
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declare -p j1
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}
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o1 "a b c"
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echo after o1:
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declare -p i1 j1
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unset i1 j1
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# case 2: readonly setting global scalar variables
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o2() {
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readonly i2=$1
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readonly j2="1 2 3"
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echo "in o2 (readonly setting global scalars):"
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declare -p i2
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declare -p j2
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}
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o2 "a b c"
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echo after o2:
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declare -p i2 j2
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unset i2 j2
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# case 3: readonly modifying local variables, converting to arrays
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o3() {
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local i3 j3
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readonly i3=($1)
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readonly j3=(1 2 3)
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echo "in o3 (readonly modifying locals, converting to arrays):"
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declare -p i3
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declare -p j3
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}
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o3 "a b c"
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echo after o3:
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declare -p i3 j3
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unset i3 j3
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# case 4: readonly setting global array variables
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o4() {
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readonly i4=($1)
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readonly j4=(1 2 3)
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echo "in o4 (readonly setting global array variables):"
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declare -p i4
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declare -p j4
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}
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o4 "a b c"
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echo after o4:
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declare -p i4 j4
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unset i4 j4
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