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Passing arguments to C# generic new() of templated type
... hit is in acquiring the ConstructorInfo in the first place. Don't take my word for it without profiling it. If that is the case, simply storing the ConstructorInfo for later reuse could alleviate the performance hit of repeated instantiations through reflection.
– Kelsie
...
C# generic type constraint for everything nullable
...ent equivalent to OR in generics. However I can propose to use default key word in order to create null for nullable types and 0 value for structures:
public class Foo<T>
{
private T item;
public bool IsNullOrDefault()
{
return Equals(item, default(T));
}
}
You coul...
What is an xs:NCName type and when should it be used?
...s. the value should start with a letter or underscore and then contains of words, dots, dashes, underscores, digits. You can try it at: regexr.com
– Naxos84
Sep 20 '17 at 6:31
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Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...ent which it would need to if you wanted to do what you describe. In other words, I can't believe that mapping of structs onto binary files in a portable way can have been a motivating factor in the language design.
– David Heffernan
Feb 28 '12 at 17:19
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How do I override __getattr__ in Python without breaking the default behavior?
... to rewrite that code and potentially miss the upstream changes should the wording be modified or extra context added to the exception object in future.
– wim
Nov 26 '18 at 19:56
...
When to use Common Table Expression (CTE)
...mmon table expression can be defined as a temporary result set or in other words its a substitute of views in SQL Server. Common table expression is only valid in the batch of statement where it was defined and cannot be used in other sessions.
Syntax of declaring CTE(Common table expression) :-
w...
Is HTML5 localStorage asynchronous?
...s value is equal to value, then the method must do nothing.
In standards, words like must, shall and may carry very specific meanings. That fact that it's talking about what the method must do means that the method itself must do it, not defer it to some later time.
This also defers to common sense...
Is there a Java reflection utility to do a deep comparison of two objects?
...eclared fields and drill down into each one, tracking differences as I go. Word of warning: Don't use recursion unless you like stack overflow exceptions. Keep things in scope with a stack (use a LinkedList or something). I usually ignore transient and static fields, and I skip object pairs that I'v...
What does git rev-parse do?
...
In other words, git rev-parse is short for git revision-parse. It takes the given input and returns the corresponding 40-character revision ID.
– Jonathan Benn
Nov 22 '18 at 19:14
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What are file descriptors, explained in simple terms?
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In simple words, when you open a file, the operating system creates an entry to represent that file and store the information about that opened file. So if there are 100 files opened in your OS then there will be 100 entries in OS (som...