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Empty string: Difference between revisions
m
→{{header|UNIX Shell}}: s='2 -gt 3' is not an empty string.
m (→{{header|Ruby}}: Show that s.clear mutates the string.) |
m (→{{header|UNIX Shell}}: s='2 -gt 3' is not an empty string.) |
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Line 675:
# the "test" command can determine truth by examining the string itself
if [ "$s" ]; then echo "not empty"; else echo "empty"; fi
# compare the string to the empty string
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