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Randomize a List
...rable.Range(1, 75));
numbers.Shuffle();
Console.WriteLine("The winning numbers are: {0}", string.Join(", ", numbers.GetRange(0, 5)));
}
}
public static class ThreadSafeRandom
{
[ThreadStatic] private static Random Local;
public static Random ThisThreadsRandom
...
AtomicInteger lazySet vs. set
...re: http://psy-lob-saw.blogspot.co.uk/2012/12/atomiclazyset-is-performance-win-for.html
To summarize: lazySet is a weak volatile write in the sense that it acts as a store-store and not a store-load fence. This boils down to lazySet being JIT compiled to a MOV instruction that cannot be re-ordered ...
How does “make” app know default target to build if no target is specified?
...
This should be the correct answer. Explicit over implicit wins in this case.
– Sion
Sep 14 '18 at 9:05
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show 2 more commen...
Difference between modes a, a+, w, w+, and r+ in built-in open function?
...ows:
The argument mode points to a string beginning with one of the following
sequences (Additional characters may follow these sequences.):
``r'' Open text file for reading. The stream is positioned at the
beginning of the file.
``r+'' Open for reading and writing. The stream i...
jQuery .hasClass() vs .is()
...
Update:
I committed a test following a comment and four upvotes to very comment. It turns out that what I had said is the correct answer. Here is the result:
http://jsperf.com/hasclass-vs-is-so
The is is multi-purpose, you can for example do is('.class'),...
Remote branch is not showing up in “git branch -r”
...
I'm using the GitHub client on Win and sometimes it doesn't update the remote branches. The first line "git remote update" works like a charm. Easy & clean
– Stefano Buora
Aug 9 '16 at 13:42
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Is there a performance gain in using single quotes vs double quotes in ruby?
...
$ ruby -v
ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.0.0]
$ cat benchmark_quotes.rb
# As of Ruby 1.9 Benchmark must be required
require 'benchmark'
n = 1000000
Benchmark.bm(15) do |x|
x.report("assign single") { n.times do; c = 'a string'; end}
x.report("assign doub...
What is a segmentation fault?
... mapped files it is possible for someone else to mess with your memory. In WIN32 there are nasty API's like 'WriteProcessMemory' too!
– paulm
Feb 17 '14 at 23:46
1
...
Do browsers send “\r\n” or “\n” or does it depend on the browser?
...ne (such as a "Bio" for a user's profile) I always end up writing the following paranoid code:
2 Answers
...
What is the purpose of Node.js module.exports and how do you use it?
...le.exports, hard to say which API is exposed (it looks like module.exports wins)
// override the original exported object
module.exports = function AConstructor() {};
// try to override the original exported object
// but module.exports will be exposed instead
exports = function AnotherConstructor...