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c# Programming Glossary: ruleC# : Why doesn't 'ref' and 'out' support polymorphism? http://stackoverflow.com/questions/1207144/c-sharp-why-doesnt-ref-and-out-support-polymorphism of type Animal and you're all set right Wrong. The rule is not N can only write to n . The rules are briefly 1 N has.. right Wrong. The rule is not N can only write to n . The rules are briefly 1 N has to write to n before N returns normally...
Order of items in classes: Fields, Properties, Constructors, Methods [closed] http://stackoverflow.com/questions/150479/order-of-items-in-classes-fields-properties-constructors-methods Methods I'm curious if there is a hard and fast rule about the order of items I'm kind of all over the place. I want..
Performance surprise with “as” and nullable types http://stackoverflow.com/questions/1583050/performance-surprise-with-as-and-nullable-types generate for the first case is much more efficient. One rule that really helps there is that an object can only be unboxed..
How to properly clean up Excel interop objects http://stackoverflow.com/questions/158706/how-to-properly-clean-up-excel-interop-objects solution to my problem on this page which also has a nice rule for the usage of COM objects in C# Never use 2 dots with com..
Compiler Ambiguous invocation error - anonymous method and method group with Func<> or Action http://stackoverflow.com/questions/2057146/compiler-ambiguous-invocation-error-anonymous-method-and-method-group-with-fun are subject to being turned into errors This is a bizarre rule of C#. To digress a moment here's an example void Q Expression.. The principle here is that we might want to change the rules of what can go in an expression tree later changing those rules.. of what can go in an expression tree later changing those rules should not change the type system rules . We want to force..
Best Practice: Initialize class fields in constructor or at declaration? http://stackoverflow.com/questions/24551/best-practice-initialize-class-fields-in-constructor-or-at-declaration one approach. c# java share improve this question My rules 1. Don't initialize with the default values in declaration..
Why can't I define a default constructor for a struct in .NET? http://stackoverflow.com/questions/333829/why-cant-i-define-a-default-constructor-for-a-struct-in-net you have an uninitialized instance variable. The basic rule in C# is the default value for any type can't rely on any initialization..
When should I dispose of a data context http://stackoverflow.com/questions/389822/when-should-i-dispose-of-a-data-context prefer to do so anyway as it's easier to follow the rule of dispose of everything which implements IDisposable than to..
ANTLR 3.3 C# Tutorials? [closed] http://stackoverflow.com/questions/4396080/antlr-3-3-c-sharp-tutorials and the excludes the token from the ast by using rewrite rules ... ^ Root Child Child ... . Take the rule foo for example.. using rewrite rules ... ^ Root Child Child ... . Take the rule foo for example foo TokenA TokenB TokenC TokenD and let's say.. Space ' ' ' t' ' r' ' n' Skip I also added a Space rule to ignore any white spaces in the source file and added some..
When is it acceptable to call GC.Collect? http://stackoverflow.com/questions/478167/when-is-it-acceptable-to-call-gc-collect from your code but what are the exceptions to this rule I can only think of a few very specific cases where it may make..
http://stackoverflow.com/questions/521298/when-to-use-struct-in-c all together into a cohesive whole. I came across these rules here cached A struct should represent a single value. A struct.. A struct should not be changed after creation. Do these rules work What does a struct mean semantically c# struct share.. be boxed frequently. Microsoft consistently violates those rules Okay #2 and #3 anyway. Our beloved dictionary has 2 internal..
Calculate date from week number http://stackoverflow.com/questions/662379/calculate-date-from-week-number question Note The below answer uses the .NET Calendar rules. It does not promise ISO8601 conformance. See some of the other.. that. Week numbering is a mess always try to find out what rules you need to follow first. The code below correctly puts the.. FirstDateOfWeek int year int weekNum CalendarWeekRule rule Debug.Assert weekNum 1 DateTime jan1 new DateTime year 1 1 int..
Use of null check in event handler http://stackoverflow.com/questions/672638/use-of-null-check-in-event-handler taken from this site . What am I missing Also what's the rule with events and GC c# share improve this question It's..
http://stackoverflow.com/questions/898828/c-sharp-finalize-dispose-pattern uses unmanaged resources Is there any hard and fast rule to follow about this. How do I know that a class uses unmanaged..
How to use LINQ to select object with minimum or maximum property value http://stackoverflow.com/questions/914109/how-to-use-linq-to-select-object-with-minimum-or-maximum-property-value values are set to DateTime.MaxValue in order to rule them out of the Min consideration assuming at least one has..
What to do when bit mask (flags) enum gets too large http://stackoverflow.com/questions/1060760/what-to-do-when-bit-mask-flags-enum-gets-too-large enum WebAgentPermission long DescriptionAttribute View Rule Group ViewRuleGroup 1 DescriptionAttribute Add Rule Group AddRuleGroup.. long DescriptionAttribute View Rule Group ViewRuleGroup 1 DescriptionAttribute Add Rule Group AddRuleGroup 2 DescriptionAttribute.. View Rule Group ViewRuleGroup 1 DescriptionAttribute Add Rule Group AddRuleGroup 2 DescriptionAttribute Edit Rule Group EditRuleGroup..
Calling constructor overload when both overload have same signature http://stackoverflow.com/questions/1293201/calling-constructor-overload-when-both-overload-have-same-signature actually does. 4 Do something else I haven't thought of. Rule #1 is a bad idea because it makes some very common and harmless.. to be illegal just because C Stream is ambiguous Yuck. Rule #1 is a bad idea so we scrapped it. Unfortunately it is not.. ambiguities. That is the CLI rules are something like Rule #2 whereas C# actually implements Rule #3. Which means that..
Monitor vs WaitHandle based thread sync http://stackoverflow.com/questions/1355398/monitor-vs-waithandle-based-thread-sync this with monitors makes the headache even worse... Rule of thumb Use Monitors lock to ensure exclusive access to a shared..
Method can be made static, but should it? http://stackoverflow.com/questions/169378/method-can-be-made-static-but-should-it instance methods but only in somewhat extreme situations. Rule CA1822 in FxCop or Code Analysis states After marking members..
Saving a Class to disk on dispose: Does my code have bugs? http://stackoverflow.com/questions/3832911/saving-a-class-to-disk-on-dispose-does-my-code-have-bugs mention it'll kill performance and be impossible to debug. Rule 1 for finalizers is don't ever use them. Rule 2 for advanced.. to debug. Rule 1 for finalizers is don't ever use them. Rule 2 for advanced users only is don't use them unless you're really..
How do I create a HashCode in .net (c#) for a string that is safe to store in a database? http://stackoverflow.com/questions/5154970/how-do-i-create-a-hashcode-in-net-c-for-a-string-that-is-safe-to-store-in-a from Guidelines and rules for GetHashCode by Eric Lippert Rule Consumers of GetHashCode cannot rely upon it being stable over..
Use reflection to get lambda expression from property Name http://stackoverflow.com/questions/7246715/use-reflection-to-get-lambda-expression-from-property-name
How A Month is defined in the rest of the world? [closed] http://stackoverflow.com/questions/8820603/how-a-month-is-defined-in-the-rest-of-the-world In our Insurance Company we calculate a month as below Rule X Day Y Month TO X 1 Day Y 1 Month 1 Month 1 Month 02 Jan to.. day in month 0 Month 05 Jan to 03 Feb according to the Rule this apply to all the rest of calculation 31 Jan to 01 Feb 2..
C# - Set Directory Permissions for All Users in Windows 7 http://stackoverflow.com/questions/8944765/c-sharp-set-directory-permissions-for-all-users-in-windows-7 destinationDirectory FileSystemAccessRule fsar new FileSystemAccessRule Users FileSystemRights.FullControl.. FileSystemAccessRule fsar new FileSystemAccessRule Users FileSystemRights.FullControl AccessControlType.Allow DirectorySecurity.. destinationDirectory ds di.GetAccessControl ds.AddAccessRule fsar No exceptions get thrown but nothing happens either. When..
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