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调用空智能指针对象的函数，Windows及Linux行为解析 - C/C++ - 清泛网 - 专...
...-O0以上优化版本访问空智能指针对象函数会发生崩溃。
问题起因：一个智能指针对象使用IsNull()判断是否为空后，执行函数，仅在Linux开优化（-O0以上）发生崩溃，代码如下：
#include <stdio.h>
#include <memory>
#include <assert.h>
c...
How to check whether mod_rewrite is enable on server?
...nfiguration file, make sure the virtual host in question has the directive AllowOverride All somewhere like this:
<VirtualHost *:80>
...
<Directory "directory/of/your/.htaccess">
AllowOverride All
</Directory>
</VirtualHost>
Basically, this states to ...
How does this checkbox recaptcha work and how can I use it?
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Excerpt from the email: We expect to move all existing reCAPTCHA sites to the new API in 2015.
– Timothy Zorn
Sep 11 '14 at 3:29
1
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How to get WordPress post featured image URL
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@gavard.e would actually work with " instead of ' :P But the quotes are not necessary at all.
– Ivanka Todorova
Feb 11 '16 at 11:56
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How can I output a UTF-8 CSV in PHP that Excel will read properly?
...l for Mac does not currently support UTF-8
Update, 2017: This is true of all versions of Microsoft Excel for Mac before Office 2016. Newer versions (from Office 365) do now support UTF-8.
In order to output UTF-8 content that Excel both on Windows and OS X will be able to successfully read, you w...
Best Practices for Laravel 4 Helpers and Basic Functions?
...lean way: Create a library. That way it'll be autoloaded ONLY when you actually use it.
Create a libraries folder inside your app folder
Create your library file, create a class in it, and add static functions to it
Option 1: Edit start/global.php to add app_path().'/libraries' to the ClassLoader:...
JavaScript equivalent of PHP's in_array()
.../ alerts 'ph' was found
// alerts 'o' was found
Note that I intentionally did not extend the Array prototype as it is generally a bad idea to do so.
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How do I compare two DateTime objects in PHP 5.2.8?
...ar_dump($date1 > $date2); // false
For PHP versions before 5.2.2 (actually for any version), you can use diff.
$datetime1 = new DateTime('2009-10-11'); // 11 October 2013
$datetime2 = new DateTime('2009-10-13'); // 13 October 2013
$interval = $datetime1->diff($datetime2);
echo $interval-&g...
phpinfo() - is there an easy way for seeing it?
...ow, but you can't see the phpinfo(); contents without making the function call. Obviously, the best approach would be to have a phpinfo script in the root of your web server directory, that way you have access to it at all times via http://localhost/info.php or something similar (NOTE: don't do this...
How do I resolve a HTTP 414 “Request URI too long” error?
I have developed a PHP web app. I am giving an option to the user to update multiple issues on one go. In doing so, sometimes the user is encountering this error. Is there any way to increase the lenght of URL in apache?
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