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Declare and initialize a Dictionary in Typescript

...ke use of the typed dictionary by splitting your example up in declaration and initialization, like: var persons: { [id: string] : IPerson; } = {}; persons["p1"] = { firstName: "F1", lastName: "L1" }; persons["p2"] = { firstName: "F2" }; // will result in an error ...
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How to randomize (or permute) a dataframe rowwise and columnwise?

...,] > df2 a b c 3 0 1 0 4 0 0 0 2 1 0 0 1 1 1 0 By default sample() randomly reorders the elements passed as the first argument. This means that the default size is the size of the passed array. Passing parameter replace=FALSE (the default) to sample(...) ensures that sampling is done withou...
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Delete forked repo from GitHub

I'm starting with git and GitHub and there's a project I'm watching on GitHub. I unintentionally clicked to fork it. Now it appears as a new project to me. ...
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How to find the lowest common ancestor of two nodes in any binary tree?

... a list containing the path from root to the node by starting at the node, and front inserting the parent. So for 8 in your example, you get (showing steps): {4}, {2, 4}, {1, 2, 4} Do the same for your other node in question, resulting in (steps not shown): {1, 2} Now compare the two lists you m...
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Is cout synchronized/thread-safe?

...ate locking. However, do things like cout get special treatment in the standard library? 4 Answers ...
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Make an Installation program for C# applications and include .NET Framework installer into the setup

... Visual Studio 2013 you can download them by using: Tools > Extensions and Updates > Online (search) > Visual Studio Installer Projects share | improve this answer | ...
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Asynchronous Requests with Python requests

...was written. However, you could just replace requests with grequests below and it should work. I've left this answer as is to reflect the original question which was about using requests < v0.13.0. To do multiple tasks with async.map asynchronously you have to: Define a function for what yo...
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add created_at and updated_at fields to mongoose schemas

Is there a way to add created_at and updated_at fields to a mongoose schema, without having to pass them in everytime new MyModel() is called? ...
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Error in exception handler. - Laravel

...he or www-data, but this can vary between the different operating systems) and keep the permissions as of the directory as 775. chgrp -R www-data app/storage Or with chown. chown -R :www-data app/storage Then make sure directory permissions are 775. chmod -R 775 app/storage From the Laravel...
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How to backup a local Git repository?

I am using git on a relatively small project and I find that zipping the .git directory's contents might be a fine way to back up the project. But this is kind of weird because, when I restore, the first thing I need to do is git reset --hard . ...