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How to find the type of an object in Go?
... do I find the type of an object in Go? In Python, I just use typeof to fetch the type of object. Similarly in Go, is there a way to implement the same ?
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Programmatically get the version number of a DLL
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To get it for the assembly that was started (winform, console app, etc...)
using System.Reflection;
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Assembly.GetEntryAssembly().GetName().Version
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ERROR 1396 (HY000): Operation CREATE USER failed for 'jack'@'localhost'
...ving privileges and DROP USER for deleting them:
REVOKE priv1,priv2,priv3,etc... FROM 'jack@localhost'; // remove certain privileges
DROP USER 'jack@localhost'; // completely delete the account
Best to use the tools provided rather than mucking around in the background.
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How should one use std::optional?
... fail
This requires dynamic memory allocation, worrying about ownership, etc. - always prefer one of the other two signatures above.
Another example:
class Contact
{
std::optional<std::string> home_phone;
std::optional<std::string> work_phone;
std::optional<std::stri...
How to scroll to the bottom of a UITableView on the iPhone before the view appears
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I believe that calling
tableView.setContentOffset(CGPoint(x: 0, y: CGFloat.greatestFiniteMagnitude), animated: false)
will do what you want.
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What is the maximum float in Python?
...er of objects allowed in a collection (e.g., maximum size of a list, dict, etc.), and corresponds to a signed version of the C size_t type; the second is the point after which the int type switches to long, and is the max value of a C long. On some platforms the two values are different: e.g., on ...
Why is it not possible to extend annotations in Java?
... enum AnnotationCategory {
GENERAL,
SEMANTICS,
VALIDATION,
ETC
}
@Category(category={AnnotationCategory.GENERAL, AnnotationCategory.SEMANTICS})
public @interface FooBarAnnotation {
}
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Combine multiple Collections into a single logical Collection?
...ods in the Collection interface would either have undefined semantics (add etc) or miserable performance (contains etc).
– Sean Patrick Floyd
Aug 2 '11 at 13:00
2
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How can one print a size_t variable portably using the printf family?
...nu says %zu (or %zx, or %zd but that displays it as though it were signed, etc.)
Microsoft says %Iu (or %Ix, or %Id but again that's signed, etc.) — but as of cl v19 (in Visual Studio 2015), Microsoft supports %zu (see this reply to this comment)
...and of course, if you're using C++, you can u...
How to force file download with PHP
...dd proper content type based on your file application/zip, application/pdf etc. - but only if you do not want to trigger the save-as dialog.
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