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difference between scope and namespace of ruby-on-rails 3 routing
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from the rails guide
"The namespace scope will automatically add :as as well as :module and :path prefixes."
so
namespace "admin" do
resources :contexts
end
is the same as
scope "/admin", as: "admin", module: "admin" ...
Function to calculate distance between two coordinates
...perly. According to Google Maps, the distance between these coordinates (from 59.3293371,13.4877472 to 59.3225525,13.4619422 ) are 2.2 kilometres while the function returns 1.6 kilometres. How can I make this function return the correct distance?
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In Java 8 how do I transform a Map to another Map using a lambda?
... answer. It is rewriting the constructor of mostly all Map implementations from an existing Map - like this.
– Kineolyan
Apr 24 at 13:37
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Why do we use arrays instead of other data structures?
...swer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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How do I merge two javascript objects together in ES6+?
...ge/ecmascript-rest-spread I never realized that because I've been using it from the start with babel and it's enabled by default. But since you need to transpile anyway, and the object spread is a pretty straightforward thing I would recommend it anyway. I love it.
– Thijs Koer...
How to enable zoom controls and pinch zoom in a WebView?
...one is looking at this answer and wondering where the webview object comes from, you can get it via WebView webView = (WebView) appView.getEngine().getView(); as shown in this comment.
– Andrew Dant
May 24 '19 at 17:14
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How can I check if a single character appears in a string?
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You can use 2 methods from the String class.
String.contains() which checks if the string contains a specified sequence of char values
String.indexOf() which returns the index within the string of the first occurence of the specified character o...
Printing newlines with print() in R
...doesn't do what you want is that print() shows you a version of the object from the R level - in this case it is a character string. You need to use other functions like cat() and writeLines() to display the string. I say "a version" because precision may be reduced in printed numerics, and the prin...
Variable declaration in a C# switch statement [duplicate]
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As someone who's coming from the VB world, this is one of the reasons I kinda hate the switch statement. Other reasons include having to break; after each case, and that there's no equivalent for things like Case 1, 2, 3, Case 4 To 10, or Case Is &g...
Is it possible only to declare a variable without assigning any value in Python?
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It's a little difficult to tell if that's really the right style to use from such a short code example, but it is a more "Pythonic" way to work.
EDIT: below is comment by JFS (posted here to show the code)
Unrelated to the OP's question but the above code can be rewritten as:
for item in sequ...