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When should I use a table variable vs temporary table in sql server?
...re details in table variable. It says that temp tables are always on disk, and table variables are in memory, that is to say, the performance of table variable is better than temp table because table variable uses less IO operations than temp table.
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Why shouldn't I use “Hungarian Notation”?
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Most people use Hungarian notation in a wrong way and are getting wrong results.
Read this excellent article by Joel Spolsky: Making Wrong Code Look Wrong.
In short, Hungarian Notation where you prefix your variable names with their type (string) (Systems Hungarian) is ba...
Create Django model or update if exists
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@OmkarDeshpande identifier is just an example; you can pass in any valid django query, such as Person.objects.get_or_create(a=a, b=b, c=c, defaults={"name": name})
– Zags
Mar 14 '18 at 16:35
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How are zlib, gzip and zip related? What do they have in common and how are they different?
...ression algorithm used in zlib is essentially the same as that in gzip and zip . What are gzip and zip ? How are they different and how are they same?
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Why hasn't functional programming taken over yet?
...programs; No side effects
Real-world programs are all about side effects and mutation. When the user presses a button it's because they want something to happen. When they type in something, they want that state to replace whatever state used to be there. When Jane Smith in accounting gets married...
How to perform Callbacks in Objective-C
... of the selector.
Next you have some object be the delegate of "MyClass" and MyClass calls the delegate methods on the delegate as appropriate. If your delegate callbacks are optional, you'll typically guard them at the dispatch site with something like "if ([delegate respondsToSelector:@selector(...
Polymorphism in C++
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Understanding of / requirements for polymorphism
To understand polymorphism - as the term is used in Computing Science - it helps to start from a simple test for and definition of it. Consider:
Type1 x;
Type2 y;
f(x)...
Quickly reading very large tables as dataframes
...ahead of time, the table does not contain any column headers or row names, and does not have any pathological characters that I have to worry about.
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SVN how to resolve new tree conflicts when file is added on two branches
...f branches (using SVN 1.6.1) where a file has been added on both branches (and then worked on in those separate branches) I'm getting one of the new tree conflicts:
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Async/await vs BackgroundWorker
In the past few days I have tested the new features of .net 4.5 and c# 5.
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