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Abusing the algebra of algebraic data types - why does this work?
...jections fst : A×B → A and snd : A×B → B, where given any type C and functions f : C → A, g : C → B you can define the pairing f &&& g : C → A×B such that fst ∘ (f &&& g) = f and likewise for g. Parametricity guarantees the universal properties automatically an...
How to become an OpenCart guru? [closed]
...ls and views, rate this answer so that I know.
Also check out my Youtube https://www.youtube.com/dreamvention and my blog https://dreamvention.com/blog I will be posting more tips and tutorials there for you guys!
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Select by partial string from a pandas DataFrame
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df[df['value'].astype(str).str.contains('1234.+')] for filtering out non-string-type columns.
– François Leblanc
Feb 13 '18 at 20:22
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What is the purpose of a stack? Why do we need it?
...ing coding, you should consider going for teaching programmers. Beside the fun, you could be making a killing without the pressures of business. Awesome flair is what you got in that area (and wonderful patience, I might add). I say that as an ex-university lecturer.
– Alan
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What is the purpose of wrapping whole Javascript files in anonymous functions like “(function(){ … }
...It's usually to namespace (see later) and control the visibility of member functions and/or variables. Think of it like an object definition. The technical name for it is an Immediately Invoked Function Expression (IIFE). jQuery plugins are usually written like this.
In Javascript, you can nest fun...
How is Docker different from a virtual machine?
...he guest OS to create the illusion that the guest OS has its own hardware. Fun fact: Before 1998 it was thought to be impossible to achieve this on the x86 architecture because there was no way to do this kind of interception. The folks at VMware were the first who had an idea to rewrite the executa...
Why isn't SQL ANSI-92 standard better adopted over ANSI-89?
...AS j USING(userid)
JOIN useraccounts AS us USING(userid)
WHERE j.jobid = 123
This is completely ambiguous. I put a UserID column in both Companies and user tables and there's no complaint. What if the UserID column in companies is the ID of the last person to modify that row?
I'm serious, Can ...
Learning assembly [closed]
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Start with MASM32 and from there look at FASM. But you'll have fun with MASM.
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Extracting text OpenCV
...Identified contours of objects in resulted image using opencv findContours function.
Drew a bounding box (rectangle) circumscribing each contoured object - each of them frames a block of text.
Optionally discarded areas that are unlikely to be the object you are searching for (e.g. text blocks) give...
What is Gradle in Android Studio?
...dited Nov 16 '15 at 4:38
hichris123
9,5151212 gold badges5050 silver badges6666 bronze badges
answered Jan 19 '14 at 9:14
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