大约有 3,300 项符合查询结果（耗时：0.0255秒） [XML]
convert a char* to std::string
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std::string has a constructor for this:
const char *s = "Hello, World!";
std::string str(s);
Note that this construct deep copies the character list at s and s should not be nullptr, or else behavior is undefined.
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Can jQuery provide the tag name?
...nt handler, 'this' is usually the element the event is called on
or
$('.hello:first-child').get(0).nodeName; // Use 'get' or simply access the jQuery Object like an array
$('.hello:first-child')[0].nodeName; // will get you the original DOM element object
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Why does calling a function in the Node.js REPL with )( work?
... two lines in a .js will cause syntax error.
function hi() { console.log("Hello, World!"); }
hi)(
Error:
SyntaxError: Unexpected token )
at Module._compile (module.js:439:25)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module....
How can we prepend strings with StringBuilder?
...sert(0, s);
}
StringBuilder sb = new StringBuilder("World!");
sb.Prepend("Hello "); // Hello World!
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Html code as IFRAME source rather than a URL
...entDocument || iframe.contentWindow.document;
iframedoc.body.innerHTML = 'Hello world';
Example
Edit 2 (December 2017): use the Html5's srcdoc attribute, just like in Saurabh Chandra Patel's answer, who now should be the accepted answer! If you can detect IE/Edge efficiently, a tip is to use s...
Why are C# 3.0 object initializer constructor parentheses optional?
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var b = new[] { 1, 1.5, 2, 2.5 }; // double[]
var c = new[] { "hello", null, "world" }; // string[]
var d = new[] { 1, "one", 2, "two" }; // Error
Reference: http://msdn.microsoft.com/en-us/library/ms364047%28VS.80%29.aspx
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multiple definition of template specialization when using different objects
... but the original object itself is defined only in one file - in this case hello.h.
– Justin Liang
Apr 8 '15 at 17:02
3
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Extract part of a regex match
...ody:
# pattern = '<title>(.*)</title>'
# text = '<title>hello</title>'
if match := re.search(pattern, text, re.IGNORECASE):
title = match.group(1)
# hello
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raw_input function in Python
...for raw_input().
Example:
name = raw_input("What is your name? ")
print "Hello, %s." % name
This differs from input() in that the latter tries to interpret the input given by the user; it is usually best to avoid input() and to stick with raw_input() and custom parsing/conversion code.
Note: T...
What does `void 0` mean? [duplicate]
...ne argument and always returns undefined.
Examples
void 0
void (0)
void "hello"
void (new Date())
//all will return undefined
What's the point of that?
It seems pretty useless, doesn't it? If it always returns undefined, what's wrong with just using undefined itself?
In a perfect world we woul...