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Is there a difference between copy initialization and direct initialization?
...erloaded function: The functions, in this case, are the constructors of T (including explicit ones), and the argument is x. Overload resolution will find the best matching constructor, and when needed will do any implicit conversion required.
Copy initialization constructs an implicit conversion se...
In-Place Radix Sort
...to fit within your working set.
Here is a hack that shows the technique
#include <iostream>
#include <iomanip>
#include <math.h>
using namespace std;
const int width = 3;
const int bucketCount = exp(width * log(4)) + 1;
int *bucket = NULL;
const char charMap[4] = {'A', ...
How to get result of console.trace() as string in javascript with chrome or firefox?
...it's captured. The second argument there excludes getStackTrace from being included in the stack trace.
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How to switch a user per task or set of tasks?
...calation. You can apply them to an entire play or playbook, set them in an included playbook, or set them for a particular task.
- name: checkout repo
git: repo=https://github.com/some/repo.git version=master dest={{ dst }}
become: yes
become_user: some_user
You can use become_with to speci...
WebSockets protocol vs HTTP
...several kilobytes of data sent as part of the request (in both directions) including many headers and cookie data. Here is an example of a request/response to using Chrome:
Example request (2800 bytes including cookie data, 490 bytes without cookie data):
GET / HTTP/1.1
Host: www.cnn.com
Connectio...
Using crontab to execute script every minute and another every 24 hours [closed]
...of every day:
0 0 * * * username /var/www/html/reset.php
You can either include /usr/bin/php in the command to run, or you can make the php scripts directly executable:
chmod +x file.php
Start your php file with a shebang so that your shell knows which interpreter to use:
#!/usr/bin/php
<?...
Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?
... first element of the array is passed instead.
Since the pointer does not include any length information, the contents of your [] in the function formal parameter list are actually ignored.
The decision to allow this syntax was made in the 1970s and has caused much confusion ever since...
...
How do CSS triangles work?
...see step 4.
Note 2 : in the following snippets, the vendor prefixes aren't included. they are included in the codepen demos.
Note 3 : the HTML for the following explanation is always : <div class="tr"></div>
STEP 1 : Make a div
Easy, just make sure that width = 1.41 x height. You ma...
Installation error: INSTALL_PARSE_FAILED_MANIFEST_MALFORMED?
...ocal/tmp/foo.apk (at Binary XML file line #214): <provider> does not include authorities attribute
D/Finsky (32707): [716] PackageVerificationService.getPackageInfo: Cannot read archive for file:///data/local/tmp/foo.apk in request id=6
D/Finsky (32707): [1] PackageVerificationReceiver.onRec...
STL：accumulate与自定义数据类型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...用来直接计算数组或者容器中C++内置数据类型，例如：#include <numeric>int...C++ STL中有一个通用的数值类型计算函数— accumulate(),可以用来直接计算数组或者容器中C++内置数据类型，例如：
#include <numeric>
int arr[]={10,20,30,40,50};
vect...