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Efficiently test if a port is open on Linux?
...test for listening on a local server in a script:
exec 6<>/dev/tcp/127.0.0.1/445 || echo "No one is listening!"
exec 6>&- # close output connection
exec 6<&- # close input connection
To determine if someone is listening, attempt to connect by loopback. If it fails, then the po...
Binding arrow keys in JS/jQuery
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edited May 16 at 13:27
answered May 15 '11 at 20:43
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Strangest language feature
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@FogleBird Neither one is really the problem. It's just the combination of the two with inconsistent coercion rules.
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Scanner vs. BufferedReader
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In currently latest JDK6 release/build (b27), the Scanner has a smaller buffer (1024 chars) as opposed to the BufferedReader (8192 chars), but it's more than sufficient.
As to the choice, use the Scanner if you want to parse the file, use the BufferedReader if you ...
Default value in Doctrine
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– Stanislav Terletskyi
May 26 '16 at 12:27
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ExpandableListView - hide indicator for groups with no children
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edited Apr 27 '16 at 11:56
Akhil Dad
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answered A...
Cocoa Autolayout: content hugging vs content compression resistance priority
...sistance at 18:05
– Brent Faust
Apr 27 '17 at 14:52
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Best way to strip punctuation from a string
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EratosthenesEratosthenes
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find: missing argument to -exec
.... Nice. Thanks.
– Eurospoofer
Jan 27 '16 at 10:10
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Note that -and and -or are not portable. PO...
Using Enum values as String literals
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– Olivier Grégoire
Jun 14 '18 at 11:27
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