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How do you delete an ActiveRecord object?
...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_destroy and :after_destroy callbacks or any dependent association options.
User.delete_all(condition: ...
Render a variable as HTML in EJS
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Akash Kumar Verma
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answered Apr 26 '12 at 9:09
Jakub ObozaJakub Oboza...
Programmatically get the cache line size?
...el), you can get this information out of /sys:
/sys/devices/system/cpu/cpu0/cache/
This directory has a subdirectory for each level of cache. Each of those directories contains the following files:
coherency_line_size
level
number_of_sets
physical_line_partition
shared_cpu_list
shared_cpu_map
s...
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edited Oct 13 '10 at 0:35
Preet Sangha
59.8k1616 gold badges128128 silver badges198198 bronze badges
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Rails: redirect_to with :error, but flash[:error] empty
...'m trying to do a redirect while setting the flash[:error] value. (Rails 3.0.10)
3 Answers
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How to subtract 2 hours from user's local time?
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answered Feb 9 '11 at 9:40
BrunoLMBrunoLM
84.4k7373 gold badges266266 silver badges420420 bronze badges
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What is .sln.docstates file created by Visual Studio Productivity Power Tools?
Visual Studio Productivity Power Tools Version 10.0.20427.1, updated 10 May 2011, is creating a .sln.docstates file.
1 Answ...
matplotlib.pyplot will not forget previous plots - how can I flush/refresh?
...ou could do for example:
fig, axes = plt.subplots(nrows=2, ncols=2)
axes[0, 1].clear()
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Opacity of div's background without affecting contained element in IE 8?
...ur instead.
The CSS is fairly simple:
.myelement {
background: rgba(200, 54, 54, 0.5);
}
...where the first three numbers are the red, green and blue values for your background colour, and the fourth is the 'alpha' channel value, which works the same way as the opacity value.
See this page ...
Is there a way to iterate over a slice in reverse in Go?
... loop counting down:
s := []int{5, 4, 3, 2, 1}
for i := len(s)-1; i >= 0; i-- {
fmt.Println(s[i])
}
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