大约有 41,000 项符合查询结果(耗时:0.0372秒) [XML]

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jQuery.parseJSON throws “Invalid JSON” error due to escaped single quote in JSON

...o the state machine diagram on the JSON website, only escaped double-quote characters are allowed, not single-quotes. Single quote characters do not need to be escaped: Update - More information for those that are interested: Douglas Crockford does not specifically say why the JSON specificat...
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Is String.Format as efficient as StringBuilder

...os)) { throw new IndexOutOfRangeException(); } fixed (char* chRef = &dest.m_firstChar) { fixed (char* chRef2 = &src.m_firstChar) { wstrcpy(chRef + destPos, chRef2, length); } } } So then: string what = "cat"; string inthehat...
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Why prefer two's complement over sign-and-magnitude for signed numbers?

... Sir , if i write char a = 12 ; and unsigned char b = 12 , is the underlying bit patter same , what really happens ? – Suraj Jain Dec 28 '16 at 8:28 ...
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“Undefined reference to” template class constructor [duplicate]

...e in order to ensure this problem never happens! (cola<int>, cola<char>, cola<ostream>, cola< cola<int> > ... and so on ...) The two answers are: Tell the compiler, at the end of cola.cpp, which particular template classes will be required, forcing it to compile cola...
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Are JavaScript strings immutable? Do I need a “string builder” in JavaScript?

... They are immutable. You cannot change a character within a string with something like var myString = "abbdef"; myString[2] = 'c'. The string manipulation methods such as trim, slice return new strings. In the same way, if you have two references to the same string...
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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_

...; #include <chrono> #include <x86intrin.h> int main(int argc, char* argv[]) { using namespace std; uint64_t size=1<<20; uint64_t* buffer = new uint64_t[size/8]; char* charbuffer=reinterpret_cast<char*>(buffer); for (unsigned i=0;i<size;++i) charbuffer[i]=...
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Yes/No message box using QMessageBox

...lude <QApplication> #include <QMessageBox> int main(int argc, char **argv) { QApplication app{argc, argv}; while (QMessageBox::question(nullptr, qApp->translate("my_app", "Test"), qApp->translate("my_app", "...
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Get an OutputStream into a String

...tring constructor, the codepage can be a String or an instance of java.nio.charset.Charset. A possible value is java.nio.charset.StandardCharsets.UTF_8. The method toString() accepts only a String as a codepage parameter (stand Java 8). ...
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C++ STL Vectors: Get iterator from index?

... legal to do this folowing, according to me: int main() { void foo(const char *); sdt::vector<char> vec; vec.push_back('h'); vec.push_back('e'); vec.push_back('l'); vec.push_back('l'); vec.push_back('o'); vec.push_back('/0'); foo(&vec[0]); } Of course, either foo must not copy the ad...
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How to Copy Text to Clip Board in Android?

... } return ""; } @SuppressLint("NewApi") public CharSequence coerceToText(Context context, ClipData.Item item) { // If this Item has an explicit textual value, simply return that. CharSequence text = item.getText(); if (text != null) { r...