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Does Typescript support the ?. operator? (And, what's it called?)

...7 and called Optional chaining: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#optional-chaining I can't find any reference to it whatsoever in the TypeScript language specification. As far as what to call this operator in CoffeeScript, it's called the existential o...
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How to sort a list/tuple of lists/tuples by the element at a given index?

I have some data either in a list of lists or a list of tuples, like this: 10 Answers ...
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How to check date of last change in stored procedure or function in SQL server

I need to check when function was changed last time. I know how to check creation date (it is in function properties window in SQL Server Management Studio). I found that in SQL Server 2000 it wasn't possible to check modify date ( look at this post: Is it possible to determine when a stored proc...
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How to send multiple data fields via Ajax? [closed]

I'm stuck: I'm trying to submit a form using AJAX, but I can't find a way to send multiple data fields via my AJAX call. 12...
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Positioning element at center of screen

...qual and space left on 'right' and 'left' sides should be equal. I would like to accomplish this with only CSS. 13 Answers ...
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Error Code: 2013. Lost connection to MySQL server during query

...during query error when I tried to add an index to a table using MySQL Workbench. I noticed also that it appears whenever I run long query. ...
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When should I use the new keyword in C++?

... been using C++ for a short while, and I've been wondering about the new keyword. Simply, should I be using it, or not? 1...
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How does collections.defaultdict work?

... Usually, a Python dictionary throws a KeyError if you try to get an item with a key that is not currently in the dictionary. The defaultdict in contrast will simply create any items that you try to access (provided of course they do not exist yet). To create su...
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SQL Server 2008 Windows Auth Login Error: The login is from an untrusted domain

... mattrumamattruma 15.8k3030 gold badges9797 silver badges160160 bronze badges ...
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How do I check if a file exists in Java?

... edited Sep 7 '18 at 12:40 DVK 117k2828 gold badges194194 silver badges306306 bronze badges answered Nov 29 '09 at 20:35 ...