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What are the correct version numbers for C#?
...numbers for C#? What came out when? Why can't I find any answers about C# 3.5 ?
12 Answers
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How to use mongoimport to import csv
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Your example worked for me with MongoDB 1.6.3 and 1.7.3. Example below was for 1.7.3. Are you using an older version of MongoDB?
$ cat > locations.csv
Name,Address,City,State,ZIP
Jane Doe,123 Main St,Whereverville,CA,90210
John Doe,555 Broadway Ave,New York,NY,1001...
postgresql - sql - count of `true` values
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133
SELECT COALESCE(sum(CASE WHEN myCol THEN 1 ELSE 0 END),0) FROM <table name>
or, as you ...
Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./
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Jeff HillmanJeff Hillman
6,93033 gold badges2929 silver badges3434 bronze badges
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Is there a decorator to simply cache function return values?
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Starting from Python 3.2 there is a built-in decorator:
@functools.lru_cache(maxsize=100, typed=False)
Decorator to wrap a function with a memoizing callable that saves up to the maxsize most recent calls. It can save time when an expensive or...
'Contains()' workaround using Linq to Entities?
....WhereIn(c => c.Name,
"Contact1",
"Contact2",
"Contact3",
"Contact4"
);
}
}
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Multi-line string with extra space (preserved indentation)
... ex or cat
cat << EndOfMessage
This is line 1.
This is line 2.
Line 3.
EndOfMessage
The string after << indicates where to stop.
To send these lines to a file, use:
cat > $FILE <<- EOM
Line 1.
Line 2.
EOM
You could also store these lines to a variable:
read -r -d '' VAR ...
Namespace and class with the same name?
...mespace, see this article.
The Framework Design Guidelines say in section 3.4 “do not use the
same name for a namespace and a type in that namespace”. That is:
namespace MyContainers.List
{
public class List { … }
}
Why is this badness? Oh, let me count the ways.
You can get yourself ...