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深入浅出计算机字符集编码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...一致：
void printStringByChar(std::string &str) {
char *p = const_cast<char *> (str.c_str());
char q[1024];
while (*p != '\0') {
sprintf(q, "%02x, %u, %c", *p, *p, *p);
std::cout << q << std::endl;
p++;
}
}
（十六进制，无符号整形，字符型）
Shift-jis:
0xff...
Is if(items != null) superfluous before foreach(T item in items)?
...
It is not superflous. At runtime items will be casted to an IEnumerable and its GetEnumerator method will be called. That will cause a dereferencing of items that will fail
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Difference between Convert.ToString() and .ToString()
...pty string or throw an exception? It's kind of like the difference between casting and using as: silent conversion.
– styfle
Sep 25 '12 at 23:18
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how to pass an integer as ConverterParameter?
...ueConverter.Convert()'s "parameter" parameter is object. You still have to cast/parse it...
– Dan J
Aug 2 '11 at 16:11
6
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AngularJS HTTP post to PHP and undefined
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you should cast your result in case $_POST is empty : $_POST = (array) json_decode(file_get_contents('php://input'), true).
– M'sieur Toph'
Oct 12 '14 at 7:12
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PHP convert XML to JSON
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I figured it out. json_encode handles objects differently than strings. I cast the object to a string and it works now.
foreach($xml->children() as $state)
{
$states[]= array('state' => (string)$state->name);
}
echo json_encode($states);
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Replace only some groups with Regex
...iousCaptureEnd = 0;
foreach (var capture in group.Captures.Cast<Capture>())
{
var currentCaptureEnd =
capture.Index + capture.Length - m.Index;
var currentCaptureLength =
cap...
How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
...cularly, you don't have to use the modulo, call ToString() and apply (int) cast. Considering that in most cases in C# world you would start numbering from 0, here is my revision: <!-- language: c# --> public static string GetColumnName(int index) // zero-based { const byte BASE = 'Z' ...
Is returning by rvalue reference more efficient?
...g by rvalue can be more efficient. std::move() is just used as an explicit cast to illustrate the point more clearly. It's not a code you would copy-paste into your project. It doesn't contradict top-voted answer, because there temporary object is created inside the function. Here returned object is...
Convert hex string to int
...95). So you need Long to store it. After conversion to negative number and casting back to Integer, it will fit. There is no 8 character hex string, that wouldn't fit integer in the end.
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