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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 :...
Impossible to Install PG gem on my mac with Mavericks
I'm trying to install the pg gem in order to work again with my rails projects. But I get this error:
26 Answers
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IN clause and placeholders
I'm attempting to do the following SQL query within Android:
9 Answers
9
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Python memory leaks [closed]
...dule actually can have debug flags set. Look at the set_debug function. Additionally, look at this code by Gnibbler for determining the types of objects that have been created after a call.
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Converting from IEnumerable to List [duplicate]
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edited Sep 7 '18 at 20:14
jpaugh
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How to extract the n-th elements from a list of tuples?
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edited Mar 6 '19 at 20:33
cs95
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Swift - Split string over multiple lines
How could I split a string over multiple lines such as below?
15 Answers
15
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iPhone Data Usage Tracking/Monitoring
...e searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows.
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What is a regular expression for a MAC Address?
...8 addresses in
human-friendly form is six groups of
two hexadecimal digits, separated by
hyphens - or colons :.
So:
^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$
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How do I output coloured text to a Linux terminal?
How do I print coloured characters to a Linux terminal that supports it?
13 Answers
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