casting
Type hinting in function argument (magic __call) throw exception
This one really messes with my head: Whenever I try to typecast a var passed to a function of type \'string\', like this:[详细]
2023-04-03 19:30 分类:问答Why does JOptionPane disturb my string?
I have a line of code similar to the following: final String food = (String) JOptionPane.showInputDialog(this, \"Choose a food\", \"Food\",[详细]
2023-04-03 15:35 分类:问答Why my implicit conversion function doesn't work?
I h开发者_运维问答ave a wrapper class and I want to modify the data and convert it back to its original type.[详细]
2023-04-03 15:18 分类:问答Are dynamic_casts safe to remove in production code?
dynamic_casts are slow开发者_开发问答er, but they are safer than static_casts (when used with object hierarchies, of course). My question is, after I\'ve ensured in my debug code that all (dynamic) ca[详细]
2023-04-03 14:00 分类:问答dynamic_cast overhead in C++
I know that dynamic_cast have runtime check and therefor consider safer (can return null pointer on failure) but slower then static_cast. but how bad is the overhead between the two?[详细]
2023-04-03 08:27 分类:问答Overload cast operator between two enums
Is there a way to overload a cast operator to convert between two enums? In 开发者_StackOverflowmy code I have[详细]
2023-04-03 07:18 分类:问答How to convert string to boolean php
How can I convert string to boolean? $string = \'false\'; $test_mode_mail = settype($string, \'boolean\');[详细]
2023-04-03 01:34 分类:问答ProtoBuf type casting problem
I use ProtoBuf to serialize class which is create开发者_运维技巧d at runtime using Activator.CreateInstance.[详细]
2023-04-02 16:23 分类:问答Why can't I explicitly cast an int to a string?
If I try to do this it doesn\'t work: static void Main(string[] args) { int a = 5000; Con开发者_如何转开发sole.WriteLine((string)a);[详细]
2023-04-02 14:05 分类:问答Performance costs of casting a concrete collection to its interface
When I write some API, it sometimes will use Collection<Model> to be the parameter. Of course, you can use ArrayList if you know ArrayList is already enough to handle all the use case.[详细]
2023-04-02 07:33 分类:问答