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How do I choose between Semaphore and SemaphoreSlim?

... documentation states that the SemaphoreSlim is a lightweight alternative and doesn't use Windows Kernel semaphores. This resource states that the SemaphoreSlim is much faster. In what situations does the SemaphoreSlim make more sense over the Semaphore and vice versa? ...
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Sample random rows in dataframe

...propriate function that would return a specified number of rows picked up randomly without replacement from a data frame in R language? Can anyone help me out? ...
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How to convert An NSInteger to an int?

... To be precise, I think NSInteger is an int on 32-bit platforms, and a long on 64-bit platforms. – Frédéric Adda Mar 11 '14 at 22:16 5 ...
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Global access to Rake DSL methods is deprecated

I am working through the Ruby on Rails 3 tutorial book and typed the following on the command line: 5 Answers ...
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List View Filter Android

I have created a list view in android and I want to add edit text above the list and when the user enter text the list will be filtered according to user input ...
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How is Generic Covariance & Contra-variance Implemented in C# 4.0?

...t I heard some news that C# 4.0 is announced to support Generic covariance and contra-variance. That is, List<string> can be assigned to List<object> . How could that be? ...
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Merge git repo into branch of another repo

Given repo Foo and repo Bar. I want to merge Bar with Foo, but only into a separate branch, called baz . 3 Answers ...
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What is the meaning of “__attribute__((packed, aligned(4))) ”

...ome data from Wiki Data structure alignment is the way data is arranged and accessed in computer memory. It consists of two separate but related issues: data alignment and data structure padding. When a modern computer reads from or writes to a memory address, it will do this in word sized chunk...
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Gradle, “sourceCompatibility” vs “targetCompatibility”?

What is the relationship/difference between sourceCompatibility and targetCompatibility ? What happens when they are set to different values? ...
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Execute and get the output of a shell command in node.js

...ode.js, I'd like to find a way to obtain the output of a Unix terminal command. Is there any way to do this? 5 Answers ...