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How is Racket different from Scheme?
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Racket includes a lot of really nice language constructs not included in R6RS scheme, like "match".
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C++ obtaining milliseconds time on Linux — clock() doesn't seem to work properly
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#include <sys/time.h>
#include <stdio.h>
#include <unistd.h>
int main()
{
struct timeval start, end;
long mtime, seconds, useconds;
gettimeofday(&start, NULL);
usleep(2000);
gett...
Java time-based map/cache with expiring keys [closed]
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@ShervinAsgari for the sake of beginners (myself included), could you switch your updated guava example to one that uses Cache instead of LoadingCache? It would match the question better (since LoadingCache has features that exceed a map with expiring entries and is far mor...
How do I update pip itself from inside my virtual environment?
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Running this shown me a lot of stuff including Download error on https://pypi.python.org/simple/pip/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found! which wasn't displayed when running --upgrade. ...
Checkout one file from Subversion
...checkout depth”. Choose “Only this item” or “Immediate children, including folders” depending on your requirement. Second option is recommended as, if you want to work on nested folder, you can directly proceed the next time otherwise you will have to follow this whole procedure again for ...
Do you need text/javascript specified in your tags?
...ould be ignored, not compiled and executed. Also, HTML comments are not to include --, so a script that decrements has an HTML error.
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type="text/javascript"
This attribute is optional. Since Netscape 2, the default programming language in all browsers has been JavaScript. In XHTML, t...
How to deploy correctly when using Composer's develop / production switch?
...out the code on a deployment machine, install dependencies as needed (this includes NOT installing dev dependencies if the code goes to production), and then move all the files to the target machine.
Why?
on shared hosting, you might not be able to get to a command line
even if you did, PHP might b...
Git: How to remove file from historical commit?
...is worked better for me than your exact steps listed above. Thank you for including the link to the Git Pro book as it was invaluable.
– dacke.geo
Nov 16 '15 at 16:53
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How to shuffle a std::vector?
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From C++11 onwards, you should prefer:
#include <algorithm>
#include <random>
auto rng = std::default_random_engine {};
std::shuffle(std::begin(cards_), std::end(cards_), rng);
Live example on Coliru
Make sure to reuse the same instance of rng throu...
Most efficient way to convert an HTMLCollection to an Array
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This works in all browsers including earlier IE versions.
var arr = [];
[].push.apply(arr, htmlCollection);
Since jsperf is still down at the moment, here is a jsfiddle that compares the performance of different methods. https://jsfiddle.net/qw9qf48...