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MongoDB: Combine data from multiple collections into one..how?
...s.country,
gender: this.gender,
age: this.age
};
emit(this._id, values);
};
mapComments = function() {
var values = {
commentId: this._id,
comment: this.comment,
created: this.created
};
emit(this.userId, values);
};
reduce = function(k, va...
Convert a list to a string in C#
...indedString = string.Join( ",", myList.ToArray() );
You can replace "," with what you want to split the elements in the list by.
Edit: As mention in the comments you could also do
string combindedString = string.Join( ",", myList);
Reference:
Join<T>(String, IEnumerable<T>)
Conca...
Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?
...oughput that can be generated in an asynchronous manner vs a classical multithreaded approach.
3 Answers
...
Learning Regular Expressions [closed]
... understand how the building blocks work, differences in syntax amount to little more than mild dialects. A layer on top of your regular expression engine's syntax is the syntax of the programming language you're using. Languages such as Perl remove most of this complication, but you'll have to keep...
Apply .gitignore on an existing repository already tracking large number of files
I have an existing Visual Studio project in my repository. I recently added a .gitignore file under my project and I assume that tells Git to ignore the files listed in the file.
...
Difference between Convert.ToString() and .ToString()
...follow
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edited Jul 19 '18 at 14:15
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Where can I find WcfTestClient.exe (part of Visual Studio)
...follow
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edited Apr 27 '15 at 16:11
answered Mar 29 '12 at 1:15
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SQL - find records from one table which don't exist in another
...
There's several different ways of doing this, with varying efficiency, depending on how good your query optimiser is, and the relative size of your two tables:
This is the shortest statement, and may be quickest if your phone book is very short:
SELECT *
FROM Call
W...
Authoritative position of duplicate HTTP GET query keys
I am having trouble on finding authoritative information about the behavior with HTTP GET query string duplicate fields, like
...
Sort a text file by line length including spaces
...ion.)
Why the question's attempted solution fails (awk line-rebuilding):
It is interesting to note the difference between:
echo "hello awk world" | awk '{print}'
echo "hello awk world" | awk '{$1="hello"; print}'
They yield respectively
hello awk world
hello awk world
The relevan...