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How do I pass a variable by reference?
...ld_string(the_string)
return new_string
# then you could call it like
my_string = return_a_whole_new_string(my_string)
If you really wanted to avoid using a return value, you could create a class to hold your value and pass it into the function or use an existing class, like a list:
def use_...
How do I write a for loop in bash
...s 1-5 and backend hosts 1-3:
% for host in {frontend{1..5},backend{1..3}}.mycompany.com
do ssh $host "echo -n $host; uptime"
done
I typically run this as a single-line command with semicolons on the ends of the lines instead of the more readable version above. The key usage consideration a...
Is there a fixed sized queue which removes excessive elements?
...E There are now two such classes available. No need to write your own. See my answer on this page.
– Basil Bourque
Feb 11 '14 at 10:22
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Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
...ll repeat each section of the poster's text, block-quoted, and followed by my response.
What's the preferred syntax, and why? Or are they pretty much interchangeable?
I would say that the $(some_command) form is preferred over the `some_command` form. The second form, using a pair of backquote...
How to escape single quotes in MySQL
How do I insert a value in MySQL that consist of single or double quotes. i.e
16 Answers
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Copying files from one directory to another in Java
...es.copy.
It integrates with O/S native I/O for high performance.
See my A on Standard concise way to copy a file in Java? for a full description of usage.
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CSS text-transform capitalize on all caps
Here is my HTML:
15 Answers
15
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How do I see active SQL Server connections?
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This is my preferred method, but it doesn't fully answer the OP's question. Suggest adding hostname to the SELECT and GROUP BY clauses to see what clients are connected. Also I just realized the Msft typo for loginame - is that an ar...
Check whether a string is not null and not empty
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thanks...the str.length() worked for me. My case was that i'm getting the values from the array after querying from the database. Even if the data was empty, when i did the str.length it was giving "1" length. Very strange but thanks for showing me this.
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How do I check if a column is empty or null in MySQL?
...OR some_col = ' ' (one space inserted in the string) then it works on both MySQL and Oracle, see answer of "onedaywhen". some_col = '' doesn't work on Oracle as empty strings mean NULL there.
– Johanna
May 18 '15 at 14:07
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