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Rails - controller action name to string
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FYI, action_name works in Rails 3.2.13, and controller.action_name doesn't.
– Zach
May 20 '14 at 21:55
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How is a non-breaking space represented in a JavaScript string?
... answered Mar 8 '11 at 20:35
Andrew MooreAndrew Moore
85.2k2929 gold badges156156 silver badges172172 bronze badges
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How do you delete an ActiveRecord object?
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It's destroy and destroy_all methods, like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won't enforce :before_destro...
Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
...re allowed (e.g. changing order of elements of each vector, changing order and names of variables, shortening variables, changing case of strings). From this, you should be able to figure out what was missing from one or the other. For example (this is not very elegant):
difference <-
data.fr...
Make a link in the Android browser start up my app?
... scheme. Something along the lines of:
<intent-filter>
<data android:scheme="anton" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABL...
What are OLTP and OLAP. What is the difference between them?
... them don't give me an idea, or my knowledge is too insufficient to understand it.
5 Answers
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Practical uses of git reset --soft?
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git reset is all about moving HEAD, and generally the branch ref.
Question: what about the working tree and index?
When employed with --soft, moves HEAD, most often updating the branch ref, and only the HEAD.
This differ from commit --amend as:
it doesn't cre...
NSString property: copy or retain?
... behind its back, you should mark the properties representing them copy. (And if you write the setter yourself instead of using @synthesize you should remember to actually use copy instead of retain in it.)
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Select last N rows from MySQL
...T 50
) sub
ORDER BY id ASC
This will select the last 50 rows from table, and then order them in ascending order.
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Stop Excel from automatically converting certain text values to dates
...Excel 2007 bug noted by Jeffiekins one should use the solution proposed by Andrew: "=""2008-10-03"""
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