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Why no ICloneable?
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@AndreyShchekin: What's unclear about deep vs shallow cloning? If List<T> had a clone method, I would expect it to yield a List<T> whose items have the same identities as those in the original list, but I would expect that any internal data structures wou...
Is there a performance impact when calling ToList()?
...ying chunks of memory is quite a fast operation to perform.
Handy tip, As vs To
You'll notice in LINQ there are several methods that start with As (such as AsEnumerable()) and To (such as ToList()). The methods that start with To require a conversion like above (ie. may impact performance), and th...
Why 0 is true but false is 1 in the shell?
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Thanks for the explanation of the braces vs parentheses on true/false
– javadba
Aug 6 '15 at 20:36
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What is the difference between C# and .NET?
...age and .NET can evolve separately though there is connection via the CTS. VS2012 e.g. not support C# 6 compiler but works with .NET 4.6
– Frank Q.
Mar 17 '18 at 6:05
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Why don't Java Generics support primitive types?
... the JVM, which uses different bytecodes for operations on reference types vs primitive types.) However, erased generics in Java provide both behavioral parametricity (generic methods) and data parametricity (raw and wildcard instantiations of generic types.)
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a homogeneous translation stra...
What are the best use cases for Akka framework [closed]
...actors. For a game or betting server, what's the advantage of using Actors vs multiple app servers behind a load balancer?
– Martin Konicek
Jul 10 '13 at 15:41
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Fastest way to replace NAs in a large data.table
...n parallel so well address previously posted benchmarks, below its timings vs fastest approach till now, and also scaled up, using 40 cores machine.
library(data.table)
create_dt <- function(nrow=5, ncol=5, propNA = 0.5){
v <- runif(nrow * ncol)
v[sample(seq_len(nrow*ncol), propNA * nrow*...
String output: format or concat in C#?
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community wiki
8 revs, 6 users 55%Michał Piaskowski
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Difference between malloc and calloc?
... count = get_int32(file);
struct foo *bar = malloc(count * sizeof *bar);
vs.
size_t count = get_int32(file);
struct foo *bar = calloc(count, sizeof *bar);
The former could result in a tiny allocation and subsequent buffer overflows, if count is greater than SIZE_MAX/sizeof *bar. The latter will...
When to use pip requirements file versus install_requires in setup.py?
... page about this topic, I highly recommend you read it:
install_requires vs Requirements files
Summary:
install_requires is there to list the dependencies of the package that absolutely must be installed for the package to work. It is not meant to pin the dependencies to specific versions, but ...