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Swift make method parameter mutable?
...nswers is the ability to declare an inout parameter. Think: passing in a pointer.
func reduceToZero(_ x: inout Int) {
while (x != 0) {
x = x-1
}
}
var a = 3
reduceToZero(&a)
print(a) // will print '0'
This can be particularly useful in recursion.
Apple's inout declarati...
How to programmatically create and read WEP/EAP WiFi configurations in Android?
...ally
This is pretty much straightforward, WifiConfiguration exposes the interface to create the same. Here is the sample code:
void saveWepConfig()
{
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiConfiguration wc = new WifiConfiguration();
wc.SSID = "\...
Getting Checkbox Value in ASP.NET MVC 4
...
To convert a value returned from a check box in a form to a Boolean property I used the ValueProviderResult's in build converter in a custom ModelBinder.
ValueProviderResult cbValue = bindingContext.ValueProvider.GetValue("Ch...
How to provide user name and password when connecting to a network share
...P/Invoke WNetAddConnection2. I prefer the latter, as I sometimes need to maintain multiple credentials for different locations. I wrap it into an IDisposable and call WNetCancelConnection2 to remove the creds afterwards (avoiding the multiple usernames error):
using (new NetworkConnection(@"\\serve...
Padding or margin value in pixels as integer using jQuery
...y just to do something that's already natively available!
jQuery's .css() converts %'s and em's to their pixel equivalent to begin with, and parseInt() will remove the 'px' from the end of the returned string and convert it to an integer:
http://jsfiddle.net/BXnXJ/
$(document).ready(function () {...
When is “Try” supposed to be used in C# method names?
...r use case would mean that it might throw an exception (such as parsing an int), the TryParse pattern makes sense.
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Do scala constructor parameters default to private val?
...
bar: Int
This is barely a constructor parameter. If this variable is not used anywhere except the constructor, it remains there. No field is generated. Otherwise private val bar field is created and value of bar parameter is assi...
STL：accumulate与自定义数据类型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...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};
vector<int> va(&arr...
shared_ptr指针被赋值后，原指针会引用清零、自动释放。 - C/C++ - 清泛网 ...
...被赋值后，原指针会引用清零、自动释放。std::shared_ptr<int> intg;void foo(std::shared_ptr<int> p){ ...shared_ptr指针被赋值后，原指针会引用清零、自动释放。
std::shared_ptr<int> intg;
void foo(std::shared_ptr<int> p)
{
intg = p; // 原指...
error C2664: “std::list::list(const std::allocator &)”: 不能将参数 1...
...const std::allocator<_Ty> &”
with
[
_Ty=int
]
原因如下: 无法从“std::vector<_Ty>”转换为“const std::allocator<_Ty>”
with
[
_Ty=int
]
没有可用于执行该转换的用户定义的转...