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Objective-C for Windows
...X so that any viable OS X program can run on Windows. Because GNUStep typically uses the latest version of gcc, they also add in support for Objective-C++ and a lot of the Objective-C 2.0 features.
I haven't tested those features with GNUStep, but if you use a sufficiently new version of gcc, you m...
File changed listener in Java
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This is no longer true in Java 7: there's now an API for this that can hook into the OS's notification services: blogs.oracle.com/thejavatutorials/entry/…
– Arnout Engelen
Sep 29 '11 at 10:00
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How to test if parameters exist in rails
...re asking about existence. You might need to differentiate:
Not there at all.
There but nil.
There but false.
There but an empty string.
as well. Hard to say without more details of your precise situation.
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Is the pImpl idiom really used in practice?
...y Herb Sutter, and in that book I have learned about the pImpl idiom. Basically, the idea is to create a structure for the private objects of a class and dynamically allocate them to decrease the compilation time (and also hide the private implementations in a better manner).
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Running V8 Javascript Engine Standalone
...standard shell.
More complete documentation here:
http://code.google.com/apis/v8/build.html
Note:
See also: Building v8 with GYP
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Java SecurityException: signer information does not match
...from directories since those AFAIK cannot be signed).
So either make sure all JARs (or at least those which contain classes from the same packages) are signed using the same certificate, or remove the signatures from the manifest of JAR files with overlapping packages.
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Create a string with n characters
...o the string.
*/
public String spaces( int spaces ) {
return CharBuffer.allocate( spaces ).toString().replace( '\0', ' ' );
}
Invoke using:
System.out.printf( "[%s]%n", spaces( 10 ) );
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Remove Elements from a HashSet while Iterating [duplicate]
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You can manually iterate over the elements of the set:
Iterator<Integer> iterator = set.iterator();
while (iterator.hasNext()) {
Integer element = iterator.next();
if (element % 2 == 0) {
iterator.remove();
}
}...
天气API：[url]https://devapi.qweather.com/v7/weather/3d?location=10101...
天气API：https://devapi.qweather.com/v7/w ... 400b695bdf067ce148d
web客户端，api, POST请求，不响应。提示：请求头信息有误：1不是列表类...
通过postman,测试的一个api ，正常相应。 web客户端，post请求，请求不成功，相应代码406。 设置请求头后，提示请求头有误：1不是请求类型。怎么办？设置请求标头的方式有以下3种：
1、二维列表，非主贴内容种的普通单列...