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TypeError: sequence item 0: expected string, int found
... connects elements inside list of strings, not ints.
Use this generator expression instead :
values = ','.join(str(v) for v in value_list)
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How can I get the SQL of a PreparedStatement?
...nd variables
which are sent to the server
and the prepared statement is executed -- working on those data
But there is no re-construction of an actual real SQL query -- neither on the Java side, nor on the database side.
So, there is no way to get the prepared statement's SQL -- as there is no...
Difference between modes a, a+, w, w+, and r+ in built-in open function?
In the python built-in open function, what is the exact difference between the modes w , a , w+ , a+ , and r+ ?
6 An...
How to join components of a path when you are constructing a URL in Python
For example, I want to join a prefix path to resource paths like /js/foo.js.
11 Answers
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Difference between ref and out parameters in .NET [duplicate]
...ized but passing it as a ref parameter it has to be set to something.
int x;
Foo(out x); // OK
int y;
Foo(ref y); // Error: y should be initialized before calling the method
Ref parameters are for data that might be modified, out parameters are for data that's an additional output for the functi...
What is the difference between “word-break: break-all” versus “word-wrap: break-word” in CSS
...equiring a particular behaviour with CJK (Chinese, Japanese, and Korean) text, whereas word-wrap: break-word is the more general, non-CJK-aware, behaviour.
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How to parse JSON in Scala using standard Scala classes?
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This is a solution based on extractors which will do the class cast:
class CC[T] { def unapply(a:Any):Option[T] = Some(a.asInstanceOf[T]) }
object M extends CC[Map[String, Any]]
object L extends CC[List[Any]]
object S extends CC[String]
object D extend...
What is the difference between HTTP_HOST and SERVER_NAME in PHP?
...stion has the SERVER_NAME correctly configured. Taking Apache HTTPD as an example, here's an extract from its documentation:
If no ServerName is specified, then the server attempts to deduce the hostname by performing a reverse lookup on the IP address. If no port is specified in the ServerName,...
How can I pass a member function where a free function is expected?
...arify how to use a function pointer to call a member function, here is an example:
// the function using the function pointers:
void somefunction(void (*fptr)(void*, int, int), void* context) {
fptr(context, 17, 42);
}
void non_member(void*, int i0, int i1) {
std::cout << "I don't ne...
What is the difference between Xamarin.Form's LayoutOptions, especially Fill and Expand?
In Xamarin.Forms every View has the two properties HorizontalOptions and VerticalOptions . Both are of type LayoutOptions and can have one of the following values:
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