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How to compare types
...pun not intended) with another type in C#?
I mean, I've a Type typeField and I want to know if it is System.String , System.DateTime , etc., but typeField.Equals(System.String) doesn't work.
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delegate keyword vs. lambda notation
...delegates (such as System.Func) uses System.Linq.Enumerable. Linq to SQL (and anything else) with expressions uses System.Linq.Queryable. Check out the parameters on those methods.
An Explanation from ScottGu. In a nutshell, Linq in-memory will produce some anonymous methods to resolve your query...
Pass a data.frame column name to a function
I'm trying to write a function to accept a data.frame ( x ) and a column from it. The function performs some calculations on x and later returns another data.frame. I'm stuck on the best-practices method to pass the column name to the function.
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Difference in months between two dates
...ssuming the day of the month is irrelevant (i.e. the diff between 2011.1.1 and 2010.12.31 is 1), with date1 > date2 giving a positive value and date2 > date1 a negative value
((date1.Year - date2.Year) * 12) + date1.Month - date2.Month
Or, assuming you want an approximate number of 'average...
Why can't I use an alias in a DELETE statement?
In SQL Server Compact Edition in Visual Studio 2010 (maybe SQL Server and SQL in general, I don't know), this command works:
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How do I show a MySQL warning that just happened?
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You can also set the command line to always display warnings after a query using \W
You can switch them off again with \w
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What is the in a .vimrc file?
I see <leader> in many .vimrc files, and I am wondering what does it mean?
5 Answers
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When should I use nil and NULL in Objective-C?
... technically, they are exactly equal, you can send messages to both nil and to NULL. Idiomatically though nil is usually used to represent an object
– cobbal
Oct 14 '09 at 5:43
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How to find a parent with a known class in jQuery?
... Very helpful. I always use to do $(this).parent().parent().parent() and i knew there was a better solution.
– Wang'l Pakhrin
Dec 8 '17 at 16:45
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Can I change the name of `nohup.out`?
When I run nohup some_command & , the output goes to nohup.out ; man nohup says to look at info nohup which in turn says:
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