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【天气API】对接国内免费好用的天气API - App应用开发 - 清泛IT社区，为创新赋能！
...ather/weatherInfo?key=【你的_API_KEY】8&city=110000&extensions=all
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阿里云也有天气API。中国天气 weather.com.cn 虽然很权威，但是不对外提供API，网上的多数链接都失效了，不考虑。
优先选择高德。
参考：https://zhuanlan.z...
Unbound classpath container in Eclipse
... have advantages and is even recommended practice for Java projects (personally, I would not do that).
Maybe some of the following work for you:
Edit the project's properties (right-click project, Properties, Java Build Path, Libraries, Remove and Add Library.
Import the project's files without t...
Stack Memory vs Heap Memory [duplicate]
...C++ and I am always wondering what exactly is stack memory vs heap memory. All I know is when I call new, I would get memory from heap. If if create local variables, I would get memory from stack. After some research on internet, the most common answer is stack memory is temporary and heap memory is...
Worst security hole you've seen? [closed]
...ernet, government sites in particular, pass an SQL query through the query string. It's the worst form of SQL injection, and it takes no effort at all to find vulnerable sites.
With minor tweaks, I've been able to find unprotected installations of phpMyAdmin, unprotected installations of MySQL, que...
“Comparison method violates its general contract!”
...ent value when comparing objects. For example, you might want to perform a string compare and force empty strings to sort to the end with:
if ( one.length() == 0 ) {
return 1; // empty string sorts last
}
if ( two.length() == 0 ) {
return -1; // empty stri...
How to make an anchor tag refer to nothing?
...
This has a problem: it doesn't allow tab-navigation.
– Iraimbilanja
May 29 '09 at 7:26
6
...
How do I use reflection to call a generic method?
...\ttypeof(T): " + typeof(T));
}
}
class Program
{
static void Main(string[] args)
{
var a = new Alpha();
var b = new Beta();
var service = new Service();
service.Process(a); // Same as "service.Process<Alpha>(a)"
service.Process(b); // Same ...
Log4Net, how to add a custom field to my logging
...r>
<parameterName value="@CustomColumn"/>
<dbType value="String" />
<size value="255" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%property{CustomColumn}" />
</layout>
</parameter>
3) Then use one of log...
Understanding reference counting with Cocoa and Objective-C
... If I don't, there will be a memory leak.
Example of object creation:
NSString* s = [[NSString alloc] init]; // Ref count is 1
[s retain]; // Ref count is 2 - silly
// to do this after init
[s release]; ...
How do I use the new computeIfAbsent function?
...urrent.ConcurrentHashMap;
public class Test {
public static void main(String[] s) {
Map<String, Boolean> whoLetDogsOut = new ConcurrentHashMap<>();
whoLetDogsOut.computeIfAbsent("snoop", k -> f(k));
whoLetDogsOut.computeIfAbsent("snoop", k -> f(k));
...