大约有 44,000 项符合查询结果(耗时:0.0313秒) [XML]

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How do I create a Java string from the contents of a file?

...eserving line terminators: String content = Files.readString(path, StandardCharsets.US_ASCII); For versions between Java 7 and 11, here's a compact, robust idiom, wrapped up in a utility method: static String readFile(String path, Charset encoding) throws IOException { byte[] encoded = Files.re...
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[since C++11] std::array的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术

...------------------- RUN_GTEST(ArrayTest, CStyleArray, @); // use array<char> as a fix sized c-string. array<char, 100> str = {0}; // all elements initialized with 0. char *p = str.data(); strcpy(p, "hello world"); printf("%s\n", p); // hello world END_TEST; 上...
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Efficiently convert rows to columns in sql server

...ou can use the PIVOT function to transform the data from rows to columns: select Firstname, Amount, PostalCode, LastName, AccountNumber from ( select value, columnname from yourtable ) d pivot ( max(value) for columnname in (Firstname, Amount, PostalCode, LastName, AccountNumber) ) piv; S...
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How to initialize a private static const map in C++?

...edef std::map&lt;std::string, int&gt; MyMap; struct T { const char* Name; int Num; operator MyMap::value_type() const { return std::pair&lt;std::string, int&gt;(Name, Num); } }; static const T MapPairs[]; static const MyMap TheMap; }; c...
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Is there a splice method for strings?

...y case im working on a dynamic string so i need to specify indices and not character value . – ProllyGeek Dec 28 '13 at 18:11 ...
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How to convert a byte array to a hex string in Java?

...ly this answer, this is the function I currently use: private static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray(); public static String bytesToHex(byte[] bytes) { char[] hexChars = new char[bytes.length * 2]; for (int j = 0; j &lt; bytes.length; j++) { int v = bytes[j] &...
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How to disallow temporaries

... How about a little hack class Foo { public: Foo (const char*) {} }; void Foo (float); int main () { Foo ("hello"); // error class Foo a("hi"); // OK return 1; } share | ...
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What does “%.*s” mean in printf?

...f(), rather than hard coding it into the format string, i.e. void f(const char *str, int str_len) { printf("%.*s\n", str_len, str); } share | improve this answer | follow...
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What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?

...eems a bit backwards. I would expect the problem do be when std::swap() is selected rather than the overload specific to the type, A::swap(). The example with std::swap(A::MyClass&amp;, A::MyClass&amp;) seems misleading. since std would never have a specific overload for a user type, I don't think i...
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A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7

...m RMAppReceipt: + (NSData*)dataFromPKCS7Path:(NSString*)path { const char *cpath = [[path stringByStandardizingPath] fileSystemRepresentation]; FILE *fp = fopen(cpath, "rb"); if (!fp) return nil; PKCS7 *p7 = d2i_PKCS7_fp(fp, NULL); fclose(fp); if (!p7) return nil; NS...