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Should IBOutlets be strong or weak under ARC?
...rong should be the default and that the developer docs are being updated.
https://twitter.com/_danielhall/status/620716996326350848
https://twitter.com/_danielhall/status/620717252216623104
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How to print register values in GDB?
...nd f (float) can be found with:
maint print reggroups
as documented at: https://sourceware.org/gdb/current/onlinedocs/gdb/Registers.html#Registers
Tips:
xmm0 ~ xmm15, are 128 bits, almost every modern machine has it, they are released in 1999.
ymm0 ~ ymm15, are 256 bits, new machine usually ha...
How to use GROUP_CONCAT in a CONCAT in MySQL
... AS NAME
FROM test
GROUP BY ID, NAME
) AS A
GROUP BY ID;
SQL Fiddle: http://sqlfiddle.com/#!2/b5abe/9/0
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Get current URL path in PHP [duplicate]
...
<?php
function current_url()
{
$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$validURL = str_replace("&", "&amp", $url);
return $validURL;
}
//echo "page URL is : ".current_url();
$offer_url = current_url();
?>
<?ph...
How to get the IP address of the docker host from inside a docker container
...meta-data for the host is still available from inside the container.
curl http://169.254.169.254/latest/meta-data/local-ipv4
For example:
$ docker run alpine /bin/sh -c "apk update ; apk add curl ; curl -s http://169.254.169.254/latest/meta-data/local-ipv4 ; echo"
fetch http://dl-cdn.alpinelinux...
Get fully qualified class name of an object in Python
...
larsks: yes it is, stackoverflow.com/questions/5271112/…
– Yaroslav Bulatov
Apr 4 '15 at 21:17
1
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[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ar*
方法一，使用ConvertBSTRToString。例如：
#include #pragma comment(lib, "comsupp.lib")
int _tmain(int argc, _TCHAR* argv[])
{
BSTR bstrText = ::SysAllocString(L"Test");
char* lpszText2 = _com_util::ConvertBSTRToString(bstrText);
SysFreeString(bstrText); // 用完释...
What does it mean for a data structure to be “intrusive”?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
修改centos字符集导致桌面进不去的一系列问题 - 更多技术 - 清泛网 - 专注C...
...RACLE 的字符集一致怎么修改WINDOWS下的 PL SQL 字符集请参看http: user.qzone.qq.com 587...为了使 WINDOWS –PL/SQL-LINUX –ORACLE 的字符集一致
怎么修改WINDOWS下的 PL/SQL 字符集请参看 http://user.qzone.qq.com/58740020/blog/1407983208
修改
[root@cento...
Where to define custom error types in Ruby and/or Rails?
...cationError; end
end
an example of this would be something like this in httparty
For Ruby on Rails
Put them in your lib/ folder under a file called exceptions.rb, which would look something like this:
module Exceptions
class AuthenticationError < StandardError; end
class InvalidUsername...