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Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied
How to I get mongo to use a mounted drive on ec2? I really do not understand. I attached a volume on ec2 formatted the drive as root and start as root and yet as root I cant access? I am running on ubuntu 12.04. No other mongo is running
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How to check if field is null or empty in MySQL?
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end as field1
from tablename
If you only want to check for null and not for empty strings then you can also use ifnull() or coalesce(field1, 'empty'). But that is not suitable for empty strings.
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How do I install imagemagick with homebrew?
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git reset --hard FETCH_HEAD
Then I retried brew install imagemagick and it correctly pulled the package from the new mirror, instead of adamv.
If that does not work, ensure that /Library/Caches/Homebrew does not contain any imagemagick files or folders. Delete them if it does.
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how to access iFrame parent page using jquery?
I have an iframe and in order to access parent element I implemented following code:
9 Answers
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format date with moment.js
...'MM/DD/YYYY');
Also note that case does matter. For Month, Day of Month, and Year, the format should be uppercase.
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Span inside anchor or anchor inside span or doesn't matter?
I want to nest span and a tags. Should I
10 Answers
10
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How to disable postback on an asp Button (System.Web.UI.WebControls.Button)
...ly show it for logged in users, but i want it to run a javascript function and it seems when it's runat="server" it always calls the postback event.
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How do I replace text inside a div element?
...t dynamically. What is the best, browser safe approach? I have prototypejs and scriptaculous available.
14 Answers
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Best practice: AsyncTask during orientation change
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Do NOT use android:configChanges to address this issue. This is very bad practice.
Do NOT use Activity#onRetainNonConfigurationInstance() either. This is less modular and not well-suited for Fragment-based applications.
You can read m...
List of strings to one string
...two also WORK, but I think the Join function was written for this purpose, and I would guess, the most efficient. I could be wrong though...
As per @Nuri YILMAZ without .ToArray(), but this is .NET 4+:
String.Join(String.Empty, los);
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