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How to do joins in LINQ on multiple fields in single join

I need to do a LINQ2DataSet query that does a join on more than one field (as 13 Answers ...
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Why doesn't indexOf work on an array IE8?

... because built-in properties are not enumerated by for/in but user-defined ones are. – Spain Train Nov 3 '10 at 21:03 5 ...
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RabbitMQ / AMQP: single queue, multiple consumers for same message?

...e the same message ID be handled by multiple consumers. Is this commonly done? Should I just have the exchange route the message into two separate queues, with a single consumer, instead? No it's not, single queue/multiple consumers with each each consumer handling the same message ID isn't possib...
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What is the use of static variable in C#? When to use it? Why can't I declare the static variable in

... static variables are used when only one copy of the variable is required. so if you declare variable inside the method there is no use of such variable it's become local to function only.. example of static is class myclass { public static int a = 0; } ...
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How to use Bitbucket and GitHub at the same time for one project?

I have one repository which I want to push into Bitbucket and GitHub. It is vital for my repository to be hosted by both. 3...
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How do I calculate the date six months from the current date using the datetime Python module?

...am looking to calculate the date 6 months from the current date. Could someone give me a little help doing this? 43 Answers...
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How to create separate AngularJS controller files?

I have all of my AngularJS controllers in one file, controllers.js. This file is structured as follows: 6 Answers ...
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How do I perform the SQL Join equivalent in MongoDB?

... @IvoPereira Yes and that's exactly why one should avoid modeling data this way. There is an article that explains the same scenario and its consequences: Why You Should Never Use MongoDB – Omid Nov 30 '17 at 20:43 ...
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Bash command to sum a column of numbers [duplicate]

...hat I can pipe into that will sum a column of numbers. I just want a quick one liner that will do something essentially like this: ...
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Bash/sh - difference between && and ;

I normally use ; to combine more than one command in a line, but some people prefer && . Is there any difference? For example, cd ~; cd - and cd ~ && cd - seems to make the same thing. What version is more portable, e.g. will be supported by a bash-subset like Android's shell ...