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How can I run a program from a batch file without leaving the console open after the program starts?
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Note that this will do not nice things if you are using the console interactively instead of just double-clicking on a batch file. Generally there is little to no need to ever put exit into a batch file.
– Joey
Apr 19 '11 at ...
HTML5 Number Input - Always show 2 decimal places
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This does not work in Chrome 55.0.2883.75. If I create a form element, place the markup above inside, type '1200' into the input and hit tab away from the element, the text displayed is still '1200' and not '1200.00'.
– Rick Glos
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How to get MVC action to return 404
... have an action that takes in a string that is used to retrieve some data. If this string results in no data being returned (maybe because it has been deleted), I want to return a 404 and display an error page.
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How to handle Objective-C protocols that contain properties?
...l, they have no variables or methods themselves - they only describe a specific set of attributes that is true about your class so that objects holding references to them can use them in specific ways.
That means in your class that conforms to your protocol, you have to do everything to make sure a...
Why is reading lines from stdin much slower in C++ than Python?
...Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm misunderstanding something.
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How do I determine if a port is open on a Windows server? [closed]
...rt may be closed by a firewall. Is there a way to ping out or in, on a specific port, to see if it is open?
13 Answers
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How can I detect if this dictionary key exists in C#?
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You can use ContainsKey:
if (dict.ContainsKey(key)) { ... }
or TryGetValue:
dict.TryGetValue(key, out value);
Update: according to a comment the actual class here is not an IDictionary but a PhysicalAddressDictionary, so the methods are Contai...
Xml serialization - Hide null values
...le of the output of my class. I don't want to output the nullable integers if they are set to null.
7 Answers
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Math.random() explanation
...sive, ie [2,5], and min must be less than max in the above example.
EDIT: If someone was going to try and be stupid and reverse min and max, you could change the code to:
int randomWithRange(int min, int max)
{
int range = Math.abs(max - min) + 1;
return (int)(Math.random() * range) + (...
Why are private fields private to the type, not the instance?
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I think one reason it works this way is because access modifiers work at compile time. As such, determining whether or not a given object is also the current object isn't easy to do. For example, consider this code:
public class Foo
{
private int bar;
public void Baz(Foo o...