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Get the value of an instance variable given its name
...variable_get("@#{name}")
There is no need to use + or intern; Ruby will handle this just fine. However, if you find yourself reaching into another object and pulling out its ivar, there's a reasonably good chance that you have broken encapsulation.
If you explicitly want to access an ivar, the ri...
Rails Object to hash
...answered Oct 6 '10 at 12:12
SwanandSwanand
11.6k66 gold badges4343 silver badges6262 bronze badges
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Retrieve version from maven pom.xml in code
...ere).
Set the value of some property in your .properties file using the standard Maven property for project version:
foo.bar=${project.version}
In your Java code, load the value from the properties file as a resource from the classpath (google for copious examples of how to do this, but here's an...
Determine if $.ajax error is a timeout
...
If your error event handler takes the three arguments (xmlhttprequest, textstatus, and message) when a timeout happens, the status arg will be 'timeout'.
Per the jQuery documentation:
Possible values for the second
argument (besides null)...
Avoid duplicates in INSERT INTO SELECT query in SQL Server
...ng to be faster than sub-selects. Perhaps that is for straight joins only, and not applicable to left joins.
– Duncan
Mar 25 '10 at 6:55
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Android notification doesn't disappear after clicking the notifcation
...tification using Notification mNotificationManager.notify(1,notification); and using NotificationBuilder mNotificationManager.notify(1, mBuilder.build());? Thanks.
– Yohanes AI
Jul 10 '14 at 11:54
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Error in plot.new() : figure margins too large in R
...barely too small. Try zooming your "Files, Plots, Packages, Help, Viewer" and see if it helps!
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MySQL root access from all hosts
...to comment out the line in your my.cnf file:
#bind-address = 127.0.0.1
and restart mysql
service mysql restart
By default it binds only to localhost, but if you comment the line it binds to all interfaces it finds. Commenting out the line is equivalent to bind-address=*.
To check where mysql...
How can I make Jenkins CI with Git trigger on pushes to master?
...cy. The wiki says "when creating a job, specify URL under "Github project" and select Git specify URL under "Source Code Management". It says "This trigger only kicks Git plugin internal polling algo for every incoming event against matched repo." I think that means it pretty much does the Poll SCM ...
How do I install imagemagick with homebrew?
...ocal
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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