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What is the difference between `after_create` and `after_save` and when to use which?
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From the docs:
after_create()
Is called after
Base.save on new objects that haven‘t
been saved yet (no record exists).
after_save()
Is called after Base.save
(regardless of whether it‘s a create...
How do I list all loaded assemblies?
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btw... I excluded it from the initial post, but I filtered some of the responses like so foreach(Type type in asm.GetTypes()){ if ((type.ToString().IndexOf("ACLASSIMLOOKINGFOR")>=0) || (type.ToString().IndexOf("BCLASSIMLOOKINGFOR")>=0...
Regex Email validation
...ator.com, and such. This doesn't do anything to verify whether an email is from a throwaway domain or not.
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vertical divider between two columns in bootstrap
...left: -1px;
}
}
In scss you can generate all needed classes probably from this:
scss:
@media(min-width: $screen-md-min) {
.col-md-border {
&:not(:last-child) {
border-right: 1px solid #d7d7d7;
}
& + .col-md-border {
border-left: ...
How do I create a SHA1 hash in ruby?
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FYI, the 'hmac-sha1' requirement is met from the gem 'ruby-hmac'
– andrewrk
Jan 14 '12 at 1:48
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How do I write JSON data to a file?
... diff tool / put them under version control.
separators: To prevent Python from adding trailing whitespaces
With a package
Have a look at my utility package mpu for a super simple and easy to remember one:
import mpu.io
data = mpu.io.read('example.json')
mpu.io.write('example.json', data)
Crea...
python numpy machine epsilon
...zonaws.com/… Basically, if you subtract the binary representation of 4/3 from 7/3, you get the definition of machine epsilon. So I suppose this should hold for any platform.
– Steve Tjoa
Jul 8 '15 at 18:24
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Git diff -w ignore whitespace only at start & end of lines
... diff --ignore-cr-at-eol or
git config --global core.whitespace cr-at-eol from here.
You can also make it the default only for that repo by omitting the --global parameter, and checking in the settings file for that repo. For the CR problem I faced, it goes away after check-in if warncrlf or auto...
HTTP header line break style
...clouds the message. Especially when the same thing is quoted right above - from the spec, no less.
– Piskvor left the building
Jul 11 '14 at 12:19
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Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?
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Where it is documented:
From the API documentation under the has_many association in "Module ActiveRecord::Associations::ClassMethods"
collection.build(attributes = {}, …)
Returns one or more new objects of the
collection type that have be...