isEqual: 首先判断两个对象是否类型一致, 再判断具体内容是否一致,如果类型不同直接return no.如先判断是否都是 NSString,在判断string的内容。 isEqualToString: 直接判断字符串内容,当然你要确保比较的对象保证是字符串。 == 直接比较指向的地址。
@implementation NSString (Empty) - (BOOL) empty{ return ([[self stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]length] == 0); } @end chown 另一个选择是使用isEqualToString检查是否等于@"",就像这样: 1 2 3 4 5 if ([myString isEqualToString:@""]) { NSLog...
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is longer than 'string'" << std::endl; return 2; } if (std::equal(prefix.begin(), prefix.end(), toCheck.begin())) { std::cout << '"' << prefix << '"' << " is a prefix of " << '"' << toCheck ...
strCaption [in] The string that the CTaskDialog displays to the user. Use this string to explain the purpose of the command.bEnabled [in] A Boolean parameter that indicates if the new button is enabled or disabled.bRequiresElevation [in] A Boolean parameter that indicates whether a command ...
To improve security, the connection string is now stored encrypted and is decrypted only as needed; it can't be returned as plain text. The string can be obtained by using the CDatabase::Dump method. Signature of CWnd::OnPowerBroadcast is changed. The signature of this message handler is ...
String^ message = gcnew String("Test String to Marshal");constchar* result; result = marshal_as<constchar*>( message );return0; } 範例:使用者定義已被取代的函式 當您不再建議使用特定函式時,您可以在自己的程式碼中使用deprecated屬性來警告呼叫者。 在此範例中,C4996 會在兩個位置產生:一個在宣...
fputs() — Write a string fputwc() — Output a wide-character fputws() — Output a wide-character string fread() — Read items __freadable() — Determine if a stream is open for reading __freadahead() — Retrieve number of bytes remaining in input buffer __freading() — Det...
The public key must be a hexadecimal character string in the public key encoding format, and generated by the client software that supports SSH. For detailed operations, see the SSH client software help. You must enter the RSA, DSA, or ECC public key on the device that works as the SSH...