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C# 'is' operator performance
I have a program that requires fast performance. Within one of its inner loops, I need to test the type of an object to see whether it inherits from a certain interface.
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What is the difference between “instantiated” and “initialized”?
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Value vis-a-vis Reference Types
Variables in C# are in 1 of 2 groups. Value types or Reference types. Types like int and DateTime are value types. In contrast, any class you create is a reference type. C# strings are also a reference type. Most things in the .NET framew...
Difference between webdriver.Dispose(), .Close() and .Quit()
...ldn't. I looked in the source code for the Selenium Client & WebDriver C# Bindings and found the following.
webDriver.Close() - Close the browser window that the driver has focus of
webDriver.Quit() - Calls Dispose()
webDriver.Dispose() Closes all browser windows and safely ends the se...
What are the pros and cons to keeping SQL in Stored Procs versus Code [closed]
What are the advantages/disadvantages of keeping SQL in your C# source code or in Stored Procs? I've been discussing this with a friend on an open source project that we're working on (C# ASP.NET Forum). At the moment, most of the database access is done by building the SQL inline in C# and calling ...
Performance surprise with “as” and nullable types
I'm just revising chapter 4 of C# in Depth which deals with nullable types, and I'm adding a section about using the "as" operator, which allows you to write:
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How to convert List to List?
...t(n => n.Value)
.ToList();
It uses an out variable introduced with C#7.0.
This other variant returns a list of nullable ints where null entries are inserted for invalid ints (i.e. it preserves the original list count):
List<int?> nullableInts = strings
.Select(s => Int32.TryPars...
Does Typescript support the ?. operator? (And, what's it called?)
...hing! I agree, I'd love to see a) wider adoption of an operator like this (C# please!) and b) a better name (the "safe navigation" operator from your linked blog post has a nice ring to it).
– Donut
Mar 7 '13 at 0:38
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Is there a way to check if int is legal enum in C#?
...m value is valid or not.
It relies on three assumptions:
Enum values in C# are only allowed to be int, absolutely nothing else
Enum names in C# must begin with an alphabetic character
No valid enum name can being with a minus sign: -
Calling ToString() on an enum returns either the int value if...
Is there a constraint that restricts my generic method to numeric types?
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C# does not support this. Hejlsberg has described the reasons for not implementing the feature in an interview with Bruce Eckel:
And it's not clear that the added complexity is worth the small yield that you get. If somet...
Xamarin 2.0 vs Appcelerator Titanium vs PhoneGap [duplicate]
...rlining premise of Mono is to create disparate mobile applications
using C# while maintaining native UI development strategies.
In addition to creating a visual design platform to develop native
applications, they have integrated testing suites, incorporated native
library support and a N...