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What is the difference between #import and #include in Objective-C?
...an Objective-C addition to the preprocessor. GCC just supports it in C and C++ source files as well, although they officially suggest not using it in C or C++ in favor of portable, traditional header guards. All Objective-C preprocessors must include #import, however.
– Jason C...
Using PUT method in HTML form
...plication/json" );
xhr.onload = () => {
if ( xhr.status === 200 ) {
// reload() uses cache, reload( true ) force no-cache. I reload the page to make "redirects normal effect" of HTML form when submit. You can manipulate DOM instead.
location.reload( true );
} el...
browser sessionStorage. share between tabs?
...ction() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { var serverResponse = xmlhttp.responseText;
top.document.title=serverResponse;
}
};
xmlhttp.open("GET", 'data.do', true);
xmlhttp.send();
}
2)comm...
When to use IMG vs. CSS background-image?
... id="headerImage"></div>
...and CSS:
#headerImage {
width: 200px;
height: 100px;
background: url(Images/headerImage.png) no-repeat;
}
A few days later, you change the location of the image. All you have to do is update the CSS:
#headerImage {
width: 200px;
height: ...
C# How can I check if a URL exists/is valid?
I am making a simple program in visual c# 2005 that looks up a stock symbol on Yahoo! Finance, downloads the historical data, and then plots the price history for the specified ticker symbol.
...
When should you use a class vs a struct in C++?
In what scenarios is it better to use a struct vs a class in C++?
25 Answers
25
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Should we pass a shared_ptr by reference or by value?
When a function takes a shared_ptr (from boost or C++11 STL), are you passing it:
10 Answers
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What is the difference between Int and Integer?
... answered May 16 '14 at 21:28
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Why is `std::move` named `std::move`?
The C++11 std::move(x) function doesn't really move anything at all. It is just a cast to r-value. Why was this done? Isn't this misleading?
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A std::map that keep track of the order of insertion?
...ting implementation for exactly this problem. That's classy. Admittedly, C++ isn't a functional language, so the syntax is somewhat elaborate.
– xtofl
Jul 8 '09 at 17:10
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