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Java Class.cast() vs. cast operator
...which makes the effort of building this optimization into the compiler somewhat worthless.
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What is the difference between “ is None ” and “ ==None ”
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I would like to add to what @TimLudwinski is saying: first, if someone chose to override the equality operator to make None a special case, why would we want to tell them otherwise? Second, "There should be one-- and preferably only one --obvious w...
nginx: send all requests to a single html page
...inx, I want to preserve the url, but actually load the same page no matter what. I will use the url with History.getState() to route the requests in my javascript app. It seems like it should be a simple thing to do?
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What is attr_accessor in Ruby?
...me = "Dennis"
person.name # => "Dennis"
Works the same way! And guess what: the instance variable @name in our person object will be set just like when we did it manually, so you can use it in other methods.
class Person
attr_accessor :name
def greeting
"Hello #{@name}"
end
end
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Should I use a data.frame or a matrix?
...only problematic if you have data of the same type.
The answer depends on what you are going to do with the data in data.frame/matrix. If it is going to be passed to other functions then the expected type of the arguments of these functions determine the choice.
Also:
Matrices are more memory eff...
How do I get indices of N maximum values in a NumPy array?
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what does [::-1] mean? @NPE
– 1a1a11a
Oct 17 '16 at 5:29
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CSS: Set a background color which is 50% of the width of the window
...ent to shift to my next color within 0.2% of the elements height, creating what appears to be a very solid line between the two colors.
Here is the outcome:
And here's my JSFiddle!
Have fun!
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Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
What's the preferred way to do command substitution in bash?
3 Answers
3
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What's the opposite of chr() in Ruby?
In many languages there's a pair of functions, chr() and ord() , which convert between numbers and character values. In some languages, ord() is called asc() .
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How to hide one item in an Android Spinner
...ly in the Spinner. The same code on older Android versions does seem to do what we all want.
– Jonathan Caryl
Mar 23 '15 at 13:59
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