大约有 40,000 项符合查询结果(耗时:0.0730秒) [XML]
How to find out which package version is loaded in R?
... figuring out how to use my university cluster. It has 2 versions of R installed. System wide R 2.11 (Debian 6.0) and R 2.14.2 in non-standard location.
...
Can someone explain the “debounce” function in Javascript
...y from the code in the link. In the link, there is a check for (immediate && !timeout) BEFORE creating a new timout. Having it after causes immediate mode to never fire. I have updated my answer to annotate the working version from the link.
function debounce(func, wait, immediate) {
...
Xcode “Build and Archive” from command line
...my old answer
Here is command line script for creating archive and IPA example.
I have an iPhone xcode project , which is located in Desktop/MyiOSApp folder.
Execute following commands one by one:
cd /Users/username/Desktop/MyiOSApp/
xcodebuild -scheme MyiOSApp archive \
-archivePath /Users/u...
Java 8: performance of Streams vs Collections
I'm new to Java 8. I still don't know the API in depth, but I've made a small informal benchmark to compare the performance of the new Streams API vs the good old Collections.
...
What differences, if any, between C++03 and C++11 can be detected at run-time?
...eturn (y.z == 1);
}
The following is based on the fact that operator int&& is a conversion function to int&& in C++0x, and a conversion to int followed by logical-and in C++03
struct Y { bool x1, x2; };
struct A {
operator int();
template<typename T> operator T();
boo...
How do I iterate through table rows and cells in JavaScript?
... Is that even JavaScript? Because your for loop looks somewhat like PHP.
– aravk33
Sep 28 '17 at 13:30
2
...
Perform debounce in React.js
...earch(text => searchStarwarsHeroAsync(text))
const SearchStarwarsHeroExample = () => {
const { inputText, setInputText, searchResults } = useSearchStarwarsHero();
return (
<div>
<input value={inputText} onChange={e => setInputText(e.target.value)} />
<div...
Replacing NAs with latest non-NA value
...e to "fill forward" NAs with the closest previous non-NA value. A simple example, using vectors (instead of a data.frame ) is the following:
...
Call static method with reflection
...)) {
try {
if((_t.Namespace == namespaceName) && _t.IsClass) _t.GetMethod(methodName, (BindingFlags.Static | BindingFlags.Public))?.Invoke(null, parameters);
} catch { }
}
}
}
Usage...
_InvokeNamespaceClassesStaticMethod("mySolution....
Chrome Extension how to send data from content script to popup.html
.../ First, validate the message's structure.
if ((msg.from === 'content') && (msg.subject === 'showPageAction')) {
// Enable the page-action for the requesting tab.
chrome.pageAction.show(sender.tab.id);
}
});
content.js:
// Inform the background page that
// this tab should ...
