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What's the difference between HEAD, working tree and index, in Git?
... ever understand it completely I got really frustrated n I wanna use the f word; But im in community! U've mentioned heads but in the images above there is always a single HEAD where r the remaining f**ng heads? "Normally HEAD points to one of the heads, so everything works out just fine." I beg u t...
Differences between Agda and Idris
...sitional equality is heterogeneous, while Agda's is homogeneous.
In other words, the putative definition of equality in Idris would be:
data (=) : {a, b : Type} -> a -> b -> Type where
refl : x = x
while in Agda, it is
data _≡_ {l} {A : Set l} (x : A) : A → Set a where
refl :...
Determining type of an object in ruby
... to respond to particular methods, commonly called "Duck typing". In other words, if it responds to the methods you want, there's no reason to be particular about the type.
For example, object.is_a?(String) is too rigid since another class might implement methods that convert it into a string, or m...
Python : List of dict, if exists increment a dict value, if not append a new dict
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Except for the first time, each time a word is seen the if statement's test fails. If you are counting a large number of words, many will probably occur multiple times. In a situation where the initialization of a value is only going to occur once and the augmenta...
What are the downsides to using Dependency Injection? [closed]
...hey mean, and work out what to do for their application. This is where the words "sensible defaults" can make life much simpler.
Object-oriented dependency injection is no different in principle. Writing a class is an overhead, both in source-code text and in developer time, and if that class is wr...
Are the shift operators () arithmetic or logical in C?
...erand (assuming a two's complement encoding for negative values).
In other words, logical shift looks at the shifted operand as just a stream of bits and move them, without bothering about the sign of the resulting value. Arithmetic shift looks at it as a (signed) number and preserves the sign as sh...
Android: AsyncTask vs Service
...or too long for beginners to understand. so I answered precisely in simple words with examples
– arjun
Feb 10 '17 at 3:16
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What is the difference between a shim and a polyfill?
...es5-shim and es6-shim) and Remy is particular about saying that to him the word 'shim' alluded to a custom API (by comparison with shim.gif). He is very much not dictating that the words be used in this way, and by saying "to me" he is tacitly acknowledging that his usage is not universal.
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Transfer-Encoding: gzip vs. Content-Encoding: gzip
...ce: https://issues.apache.org/bugzilla/show_bug.cgi?id=39727#c31
In other words: Don't do on-the-fly Content-Encoding, use Transfer-Encoding instead!
Edit: That is, unless you want to serve gzipped content to clients that only understand Content-Encoding. Which, unfortunately, seems to be most of ...
How to use unicode characters in Windows command line?
....
Console font rendering supports only Unicode characters in BMP (in other words: below U+10000). Only simple text rendering is supported (so European — and some East Asian — languages should work fine — as far as one uses precomposed forms). [There is a minor fine print here for...