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Replace one character with another in Bash
...rings. On my system tr outperforms bash starting at strings with more than 1000 characters. It seems like bash's time complexity is worse than linear. A small test: x="$(tr -dc 'a-z \n' </dev/urandom | head -c1M)"; time y="$(tr ' ' \\- <<< "$x")"; time z="${x// /-}". With a string length...
MySQL: how to get the difference between two timestamps in seconds
...nd the TIME_TO_SEC() functions as follows:
SELECT TIME_TO_SEC(TIMEDIFF('2010-08-20 12:01:00', '2010-08-20 12:00:00')) diff;
+------+
| diff |
+------+
| 60 |
+------+
1 row in set (0.00 sec)
You could also use the UNIX_TIMESTAMP() function as @Amber suggested in an other answer:
SELECT UNIX_TI...
Why is Class.newInstance() “evil”?
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answered Oct 12 '08 at 10:43
Chris Jester-YoungChris Jester-Young
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Why does the C# compiler go mad on this nested LINQ query?
... machine) and very long time to compile (actually I get IO exception after 10 minutes).
1 Answer
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How to click first link in list of items after upgrading to Capybara 2.0?
... relevant to capybara
– keoghpe
May 10 '17 at 10:18
2
Isn't that jQuery?
– ...
Difference between var_dump,var_export & print_r
...
NanneNanne
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Setting Vim whitespace preferences by filetype
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PeterPeter
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Current executing procedure name
...L Serve 2012
– Pimenta
May 6 '16 at 10:57
2
Still valid on SQL Server 2016
–...
How do I pick randomly from an array?
...|
edited Jan 26 '15 at 21:10
answered Aug 14 '10 at 14:39
M...
What is the proper #include for the function 'sleep()'?
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edited Dec 10 '19 at 10:16
Daniel Selvan
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answered F...