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MySQL show status - active or total connections?
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This is the total number of connections to the server till now.
To find current conection status you can use
mysqladmin -u -p extended-status | grep -wi
'threads_connected\|threads_running' | awk '{ print $2,$4}'
This will show you:
Threads_connected 12
Threads_running 1 ...
How can I set the value of a DropDownList using jQuery?
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Now, this doesn't work at all because select tag doesn't have any attribute named selectedIndex. It's a property of DOM object instead. Hence code should be: $("#mydropdownlist").get(0).selectedIndex = index_here;
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Extract a regular expression match
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One way would be this:
test <- regexpr("[0-9]+","aaa12456xxx")
Now, notice regexpr gives you the starting and ending indices of the string:
> test
[1] 4
attr(,"match.length")
[1] 5
So you can use that info with substr function
substr("aaa12456xxx",test,test+attr(test,"match.le...
JSON Array iteration in Android/Java
...of JSONArray iterable, meaning that the for (Object foo : bar) syntax will now work with it (note that foo has to be an Object, because JSONArrays do not have a declared type). All this works because the JSONArray class is backed by a simple ArrayList, which is already iterable. I imagine that other...
In where shall I use isset() and !empty()
...k if a key isset in that array.
Think about $_GET / $_POST, for instance.
Now, to work on its value, when you know there is such a value : that is the job of empty.
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How do I check if a number is a palindrome?
... that's what i came up w/ too. i guess no sense in me posting it now. +1
– Esteban Araya
Oct 13 '08 at 22:21
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Java: How to Indent XML Generated by Transformer
...ark with stackoverflow.com/a/979606/837530, I removed the whitespaces, and now indents like a charm
– Sa'ad
Jun 24 '14 at 11:54
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How to silence output in a Bash script?
...riptor 1 which is the the stdout.
2>&1
Redirect stdout to File
Now when perform this you are redirecting the stdout to the file sample.s
myprogram > sample.s
Redirect stderr and stdout to File
Combining the two commands will result in redirecting both stderr and stdout to sample.s...
Combining two Series into a DataFrame in pandas
...Column_name#1'] = series_1
df['Column_name#2'] = series_2
Check results now
df.head(5)
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nodejs how to read keystrokes from stdin
...And i am pretty sure openStdin() has either been removed or is deprecated. Now, you can access stdin as process.stdin
– Élektra
May 5 '15 at 14:49
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