parameters

问题 I'm trying to solve this problem: Create a PROC procedure that takes one parameter as Pass by Value and prints the number of 'X' according to the number passed as a parameter. Before printing, make sure parameter is a positive number, at end of program you need to change the registers that have been used back to their first values . If the input to the procedure is 5 then the output on the console should be: XXXXX This is my code: var db 5 ;In the dataseg push [var] ;in the codeseg proc

问题 void foo (int i , int k = 7) { cout << k; } int main(){ foo(1, 2); } k will output 2. My question is, in what order does foo initialize the parameter and acquire the argument? What is the process foo goes through to get 2. Thank you 回答1: void foo (int i , int k = 7); This prototype means that if you call foo with only the first param the second is implicitly set to 7. foo(1, 2); // i=1, k=2 foo(5); // <==> foo(5, 7) i=1, k=7 This mechanism is resolved at compile time, by the compiler.

问题 There are three 'normal' modes of passing parameters in Ada: in , out , and in out . But then there's a fourth mode, access … is there anything wherein they're required? (i.e. something that would otherwise be impossible.) Now, I do know that the GNAT JVM Ada-compiler makes pretty heavy use of them in the imported [library] specifications. (Also, they could arguably be seen as essential for C/C++ translations.) 回答1: One of the primary drivers of the access mode was to work-around the

问题 My F# program needs to talk to SQL Server. In one part I have something like this: let workFlowDetailRuncommand = new SqlCommand(query, econnection) workFlowDetailRuncommand.CommandTimeout <- 100000 workFlowDetailRuncommand.Parameters.Add("@1", SqlDbType.Int).Value <- 42 workFlowDetailRuncommand.Parameters.Add("@2", SqlDbType.VarChar).Value <- "answer" workFlowDetailRuncommand.Parameters.Add("@3", SqlDbType.VarChar).Value <- mydate.ToString("yyyy.MM.dd") workFlowDetailRuncommand.Parameters

问题 The line causing the error is this one... mysql_close($con); Here is the entirety of the code... $con=mysqli_connect("localhost","root","pass","db_name"); // Check connection if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } $result = mysqli_query($con,"SELECT * FROM medicos"); while($row = mysqli_fetch_array($result)) { echo '.....'; } mysql_close($con); 回答1: The line mysql_close($con); must be changed to mysqli_close($con); You cannot

问题 Hey I was using parametrized queries for my application wich worked just fine but now (I don't know why) they aren't replaced anymore with the values... So instead of running something like "SELECT [TABLE_NAME] FROM [MyDefinetelyExistingDatabase]"; it tries to execute "SELECT [TABLE_NAME] FROM [@targetDatabase]"; wich, of course, will fail. var dataBaseToGetTablesFrom = "MyDefinetelyExistingDatabase"; var results = new List<string>(); const string query = @"SELECT [TABLE_NAME] AS tableName

问题 Do I always have to place variadic template parameters at the end of my template parameters? template <size_t begin = 0U, typename... Tp> void foo(tuple<Tp...> t); For example I get all kinds of errors with this: #include <functional> #include <iostream> #include <string> #include <tuple> using namespace std; template <typename... Tp, size_t begin = 0U> enable_if_t<begin == sizeof...(Tp), void> foo(tuple<Tp...>& t){ cout << endl; } template <typename... Tp, size_t begin = 0U> enable_if_t

问题 Pointedly what I'm asking below is: What is the actual data type of the @cleartext parameter of this SQL function? >> ENCRYPTBYKEY (..) - http://msdn.microsoft.com/en-us/library/ms174361.aspx (If you read below this line you can follow the history and reasoning. I think it's trickier than it first appears.) The SQL Server documentation states the @cleartext (2nd) parameter of the EncryptByKey(..) function can accept a number of various types: EncryptByKey (@key_GUID , @cleartext [, @add

问题 When attempting to run an HQL script with the following logic, I receive the error: ParseException line 4:0 cannot recognize input near 'CASE' 'WHEN' 'mytable' in serde properties specification Script Logic INSERT OVERWRITE DIRECTORY '/example/path' ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' CASE WHEN ${hiveconf:tbl_name}='mytable' THEN SELECT * FROM ${hiveconf:tbl_name} LEFT OUTER JOIN ...; WHEN ${hiveconf:tbl_name}='mytable2' THEN SELECT * FROM ${hiveconf:tbl_name} LEFT OUTER JOIN ...;

问题 I am trying to custom scoping, such that if I have something like function in my language that get parameters, I want that those parameters will be visible only until there is semicolon, and out of this scope, I want it to not be visible. I tried redefine the method getScope() in the file MyDslScopeProvider.xtend In getScope I did something like this: if (EclassName=="TypedParam" && EFeatureName=="type" && contextType == "TypedParam"){ return Scopes.scopeFor(Collections.singleton(context)