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Python (and Python C API): __new__ versus __init__
...an immutable type, as it would allow them to be modified after creation by calling obj.__init__(*args).
Compare the behaviour of tuple and list:
>>> x = (1, 2)
>>> x
(1, 2)
>>> x.__init__([3, 4])
>>> x # tuple.__init__ does nothing
(1, 2)
>>> y = [1, 2]...
Rails 4 - Strong Parameters - Nested Objects
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Not sure of Rails 4 but in my Rails 5 project I have to call permit! to be whitelisted or else it's remained unpermitted after tapping it. In this case it would be params[:measurement][:groundtruth].permit!
– nayiaw
Feb 22 '17 at 7:54
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Where does Git store the SHA1 of the commit for a submodule?
...module lives will have an entry for the submodule's commit (this is the so-called "gitlink").
Try doing git ls-tree master <path-to-directory-containing-submodule> (or just git ls-tree master if the submodule lives in the top-level directory).
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What is the Scala annotation to ensure a tail recursive function is optimized?
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From the "Tail calls, @tailrec and trampolines" blog post:
In Scala 2.8, you will also be able to use the new @tailrec annotation to get information about which methods are optimised.
This annotation lets you mark specific methods ...
Why does the C# compiler not fault code where a static method calls an instance method?
The following code has a static method, Foo() , calling an instance method, Bar() :
3 Answers
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How to compare Lists in Unit Testing
...tual);
List<T> doesn't override Equals, so if Assert.AreEqual just calls Equals, it will end up using reference equality.
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Why is rbindlist “better” than rbind?
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rbindlist is an optimized version of do.call(rbind, list(...)), which is known for being slow when using rbind.data.frame
Where does it really excel
Some questions that show where rbindlist shines are
Fast vectorized merge of list of data.frames by row
Troubl...
Access Container View Controller from Parent iOS
...ntroller is made a child of the first view controller. prepareForSegue: is called just before this happens. you can use this opportunity to pass data to the child, or to store a reference to the child for later use. see also developer.apple.com/library/ios/#documentation/uikit/reference/…
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Resizing UITableView to fit content
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Where exactly did you specify the height? Did you make a call to reloadData and resize it afterwords?
– James
Oct 25 '12 at 18:57
28
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How can I group data with an Angular filter?
...PDATE: jsbin Remember the basic requirements to use angular.filter, specifically note you must add it to your module's dependencies:
(1) You can install angular-filter using 4 different methods:
clone & build this repository
via Bower: by running $ bower install angular-filter from...