stringsql =string.Concat(newobject[] {"insert into 表名(字段1,字段2) values('",值1,"','",值2,"')"});stringsql ="insert into 表名(字段1,字段2) values('"+值1+"','"+值2+"')"; 以上两条语句的结果是相同的,但采用string.Concat()可以使用程序的执行效率显著提高,所以,建议拼串的操...
Returns the number of Unicode code points in the specified text range of this String. int compareTo(String anotherString) Compares two strings lexicographically. int compareToIgnoreCase(String str) Compares two strings lexicographically, ignoring case differences. String concat(String str) Concatenate...
C# String Concat()用法及代码示例C# Concat() 方法用于连接多个字符串对象。它返回连接的字符串。 Concat() 的重载方法有很多。 签名 public static string Concat(String, String) public static string Concat(IEnumerable<String>) public static string Concat(Object) public static string Concat(Object, Object...
Aşağıdaki örnek, üç dizeyi birleştirmek için Concat yöntemini kullanır ve sonucu görüntüler. C# Kopyala Çalıştır using System; public class Example { public static void Main() { String s1 = "We went to a bookstore, "; String s2 = "a movie, "...
string(CONCATVAR3"${VAR} ${VAR2}") 下面是这些操作的流程图: 在这里插入图片描述 这些是CMake中连接字符串的基本操作。在接下来的章节中,我们将介绍更多关于CMake String的高级操作和实际应用。 1.3 字符串长度(String Length) 在CMake中,我们可以使用string命令的LENGTH子命令来获取字符串的长度。例如,我们可...
publicstaticstringGreet(stringgreeting,stringname)=>string.Concat(greeting,", ", name); In the general case, however, the C# compiler emits a call toString.Format. For example, if you were to write: Copy publicstaticstringDescribeAsHex(intvalue)=> $"{value} in hex is 0x{value:X}"; ...
Concat(Object) Insert(Int32, String) Join(String, String[]) Remove(Int32, Int32) Replace(Char, Char) Split(Char[]) Trim(Char[]) Applies to .NET 9 and other versions ProductVersions .NETCore 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 ...
String concat ( String str) Concatenates the specified string to the end of this string. boolean contains ( String Returns true if and only if this string contains the specified string. boolean contentEquals ( StringBuffer sb) Returns true if and only if this String represents the same seque...
L'approccio più comune per concatenare più stringhe in C++ consiste nell'usare il file + operatore, che è sovraccaricato per gli oggetti stringa. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 #include <iostream> #include <string> int main() { std::string s1("Hello"); std::str...
foreach(char c in cc){ sb.Append(c);} string s=sb.ToString();StringBuilder 的 Append 方法支持多种参数，所以数组转换成string基本上都可以用它。另外 string[] 转换成string,.Net框架提供了一个使用的方法 string strOr= "OR";string result=string.Concat(new string[]{" A ",strOr,"...