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When to use nil, blank, empty? [duplicate]
Is there any guidelines on how to differentiate between .nil? , .blank? and .empty? ?
4 Answers
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How do I check if a number is positive or negative in C#?
How do I check if a number is positive or negative in C#?
17 Answers
17
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Create an index on a huge MySQL production table without table locking
...1 | grep real;
(time mysql -uroot -e 'update website_development.users set bio="" where id = 41225\G'>/dev/null) 2>&1 | grep real;
done
) | cat -n &
PID=$!
sleep 0.05
echo "Index Update - START"
mysql -uroot website_development -e 'alter table users add index ddopsonfu (last_name...
A good solution for await in try/catch/finally?
... editor after snippets, if snippets enabled
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powershell - extract file name and extension
I need to extract file name and extension from e.g. my.file.xlsx. I don't know the name of file or extension and there may be more dots in the name, so I need to search the string from the right and when I find first dot (or last from the left), extract the part on the right side and the part on the...
jQuery - Detect value change on hidden input field
...n't automatically fire the .change() event. So, wherever it is that you're setting that value, you also have to tell jQuery to trigger it.
function setUserID(myValue) {
$('#userid').val(myValue)
.trigger('change');
}
Once that's the case,
$('#userid').change(function(){
...
Unable to authenticate with Git Bash to Visual Studio Team Services
...tials if you want to use other Git clients outside of Visual Studio...
To set up alternate creds in Visual Studio Team Services (VSTS), click on your name/icon on the top right -> Security -> Alternate Authentication Credentials
Edit: Add more details about this from VSTS (taken from the al...
Splitting string into multiple rows in Oracle
...,]+', 1, levels.column_value)) as error
from
temp t,
table(cast(multiset(select level from dual connect by level <= length (regexp_replace(t.error, '[^,]+')) + 1) as sys.OdciNumberList)) levels
order by name
EDIT:
Here is a simple (as in, "not in depth") explanation of the query.
leng...
Iterating over Java collections in Scala
... to iterate over the rows contained in the java.util.Iterator that I get from the Sheet class. I would like to use the iterator in a for each style loop, so I have been trying to convert it to a native Scala collection but will no luck.
...
How to call any method asynchronously in c#
...
How would I use this technique and have a timeout set?
– Su Llewellyn
Jun 17 at 18:22
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