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Declaring variables inside loops, good practice or bad practice?
...les inside loops, you ensure their scope is restricted to inside the loop. It cannot be referenced nor called outside of the loop.
This way:
If the name of the variable is a bit "generic" (like "i"), there is no risk to mix it with another variable of same name somewhere later in your code (can a...
comparing sbt and Gradle [closed]
I am diving into Scala and noticed sbt. I have been quite happy with Gradle in java/groovy projects, and I know there's a scala plugin for Gradle.
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/bin/sh: pushd: not found
...shd command might do the chdir(2) call and then start a new shell, but ... it wouldn't be very usable.) pushd is a shell builtin, just like cd.
So, either change your script to start with #!/bin/bash or store the current working directory in a variable, do your work, then change back. Depends if yo...
Good examples of Not a Functor/Functor/Applicative/Monad?
...ewtype T a = T (a -> Int)
You can make a contravariant functor out of it, but not a (covariant) functor. Try writing fmap and you'll fail. Note that the contravariant functor version is reversed:
fmap :: Functor f => (a -> b) -> f a -> f b
contramap :: Contravariant f ...
Do threads have a distinct heap?
...ed by the operating system. I wonder if each thread has a heap distinct to itself also?
8 Answers
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How to check if character is a letter in Javascript?
I am extracting a character in a Javascript string with:
14 Answers
14
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Move capture in lambda
...move the unique_ptr into the lambda
go.run( [ u{move(u)} ] { do_something_with( u ); } );
But it is much more general in the sense that captured variables can be initialized with anything like so:
auto lambda = [value = 0] mutable { return ++value; };
In C++11 this is not possible yet, but wit...
Copy constructor versus Clone()
In C#, what is the preferred way to add (deep) copy functionality to a class? Should one implement the copy constructor, or rather derive from ICloneable and implement the Clone() method?
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Xml configuration versus Annotation based configuration [closed]
In a few large projects i have been working on lately it seems to become increasingly important to choose one or the other (XML or Annotation). As projects grow, consistency is very important for maintainability.
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Set every cell in matrix to 0 if that row or column contains a 0
Given a NxN matrix with 0s and 1s. Set every row that contains a 0 to all 0 s and set every column that contains a 0 to all 0 s.
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