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Query to count the number of tables I have in MySQL
... the number of tables I have and I am sometimes curious just to do a quick command line query to count the number of tables in my database. Is that possible? If so, what is the query?
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How to extract a substring using regex
...a = "some string with 'the data i want' inside";
Pattern pattern = Pattern.compile("'(.*?)'");
Matcher matcher = pattern.matcher(mydata);
if (matcher.find())
{
System.out.println(matcher.group(1));
}
Result:
the data i want
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A non-blocking read on a subprocess.PIPE in Python
...hough. It includes good practices but not always necessary. Python 3.x 2.X compat and close_fds may be omitted, it will still work. But just be aware of what everything does and don't copy it blindly, even if it just works! (Actually the simplest solution is to use a thread and do a readline as Seb ...
What is the purpose of the word 'self'?
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I find it interesting that the community didn't choose this instead of self. Does self have some history that I'm not aware of in older programming languages?
– Jules G.M.
Dec 12 '12 at 20:46
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Calendar Recurring/Repeating Events - Best Storage Method
...uld be set to 0).
Hopefully this will help somebody else too!
Storing "Complex" Repeating Patterns
This method is better suited for storing complex patterns such as
Event A repeats every month on the 3rd of the month starting on March 3, 2011
or
Event A repeats Friday of the 2nd week of t...
Determine if variable is defined in Python [duplicate]
... and incrementally need to re-read Joel's 9-years-old essay joelonsoftware.com/articles/fog0000000069.html .
– Alex Martelli
Oct 20 '09 at 14:51
23
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How to save CSS changes of Styles panel of Chrome Developer Tools?
...o only add at the bottom of my theme's stylesheet whatever CSS diff I have come up with while live editing my CSS. That's it. Is there a way to come up with a 'diff' that's CSS I can copy and paste? See this other question: stackoverflow.com/questions/21871535/… The background story is that I am e...
Truncate (not round) decimal places in SQL Server
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How to check if a String is numeric in Java
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With Apache Commons Lang 3.5 and above: NumberUtils.isCreatable or StringUtils.isNumeric.
With Apache Commons Lang 3.4 and below: NumberUtils.isNumber or StringUtils.isNumeric.
You can also use StringUtils.isNumericSpace which returns ...
How to detect if JavaScript is disabled?
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