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Get the value of an instance variable given its name
...mean for @cpus to be public. What you should do is:
class Computer
attr_reader :cpus
end
Now you can do Computer.new(4).cpus.
Note that you can reopen any existing class and make a private ivar into a reader. Since an accessor is just a method, you can do Computer.new(4).send(var_that_evaluate...
How do I perform the SQL Join equivalent in MongoDB?
...ongodb site addresses exactly this question:
https://mongodb-documentation.readthedocs.io/en/latest/ecosystem/tutorial/model-data-for-ruby-on-rails.html
When we display our list of stories, we'll need to show the name of the user who posted the story. If we were using a relational database, we coul...
include external .js file in node.js app
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Tip for anyone reading, you can just do exports.foo, rather then module.exports.foo
– Tyler Egeto
Apr 12 '11 at 2:29
9
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vertical alignment of text element in SVG
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Appreciate the link to the spec, some really useful reading there. Wasn't aware of the (linked) "<list-of-lengths>" option for instance (allows per-character manipulation)
– brichins
Dec 14 '16 at 22:09
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Does JSON syntax allow duplicate keys in an object?
...inted out in the comments: ECMA-262 "ECMAScript® Language Specification", reads:
In the case where there are duplicate name Strings within an object, lexically preceding values for the same key shall be overwritten.
In other words, last-value-wins.
Trying to parse a string with duplicated ...
What is the difference between OpenID and SAML?
...ed and in 2014, OpenID Connect (a more detailed timeline here).
To anyone reading this nowadays - OpenID Connect is not the same OpenID the original answer refers to, rather it's a set of extensions to OAuth2.0.
While this answer can shed some light from the conceptual viewpoint, a very concise ve...
How can I dynamically create a selector at runtime with Objective-C?
... Well, I still had the links flying around in my bookmarks since I've read through the Objective-C 2.0 docs a couple of days ago.
– Torsten Marek
Sep 22 '08 at 1:42
add a...
Best practice for Python assert
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@VajkHermecz: Actually, if you reread the question, this is two questions in one. People only looking at the title are only familiar with the first question, which this answer doesn't answer. This answer actually contains an answer to the second question.
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How do you sort a list in Jinja2?
... can use dictsort, which does accept a key specification for the sorting. Read this: http://jinja.pocoo.org/2/documentation/templates#dictsort for an example.
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Interview question: Check if one string is a rotation of other string [closed]
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@Jon - I read Beau's comment as being a joke
– oxbow_lakes
Mar 31 '10 at 15:04
37
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