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How can I check if a Perl array contains a particular value?

I am trying to figure out a way of checking for the existence of a value in an array without iterating through the array. 1...
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Method call if not null in C#

... From C# 6 onwards, you can just use: MyEvent?.Invoke(); or: obj?.SomeMethod(); The ?. is the null-propagating operator, and will cause the .Invoke() to be short-circuited when the operand is null. The operand is only accessed once, so there is no risk of the "value ...
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Circle-Rectangle collision detection (intersection)

How can I tell whether a circle and a rectangle intersect in 2D Euclidean space? (i.e. classic 2D geometry) 25 Answers ...
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Check existence of input argument in a Bash shell script

I need to check the existence of an input argument. I have the following script 11 Answers ...
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iPhone hide Navigation Bar only on first page

...and then hidden when the "children" get called. Trouble is that I cannot find the event/action to trigger it to hide again when they get back to the root view.... ...
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What is Clojure useful for? [closed]

What real world applications are people using Clojure for? 5 Answers 5 ...
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Advantages of std::for_each over for loop

... of std::for_each over for loop? To me, std::for_each only seems to hinder the readability of code. Why do then some coding standards recommend its use? ...
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Defeating a Poker Bot

There is a new Open Source poker bot called PokerPirate . I am interested in any creative ways in which a web application could detect/thwart/defeat a poker bot. (This is a purely academic discussion, in the same spirit that PokerPirate was written.) ...
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How Many Seconds Between Two Dates?

... I'm taking YYYY & ZZZZ to mean integer values which mean the year, MM & NN to mean integer values meaning the month of the year and DD & EE as integer values meaning the day of the month. var t1 = new Date(YYYY, MM, DD...
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Is it possible to “await yield return DoSomethingAsync()”

Are regular iterator blocks (i.e. "yield return") incompatible with "async" and "await"? 9 Answers ...