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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 ...
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...
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 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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What is reflection and why is it useful?
...nown type in Java, and you would like to call a 'doSomething' method on it if one exists. Java's static typing system isn't really designed to support this unless the object conforms to a known interface, but using reflection, your code can look at the object and find out if it has a method called '...
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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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) + (...
What does collation mean?
...ir accents and other features, collation changes. For example, though the different accented forms of a may exist at disparate code points, they may all need to be sorted as if they were the same letter.
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jQuery access input hidden value
...l()); This finds the hidden variable with id foo . This search is more specific.
– Mohammed Rafeeq
Mar 7 '14 at 12:40
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