Empty string: Difference between revisions
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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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# the "test" command can determine truth by examining the string itself |
# the "test" command can determine truth by examining the string itself |
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if [ $s ]; then echo "not empty"; else echo "empty"; fi |
if [ "$s" ]; then echo "not empty"; else echo "empty"; fi |
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# compare the string to the empty string |
# compare the string to the empty string |
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