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Does ARC support dispatch queues?

I'm reading apple's documentation about "Memory Management for Dispatch Queues": 2 Answers ...
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Replace values in list using Python [duplicate]

I have a list where I want to replace values with None where condition() returns True. 7 Answers ...
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How can I convert a hex string to a byte array? [duplicate]

Can we convert a hex string to a byte array using a built-in function in C# or do I have to make a custom method for this? ...
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Is returning by rvalue reference more efficient?

for example: 2 Answers 2 ...
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SQLite table constraint - unique on multiple columns

I can find syntax "charts" on this on the SQLite website, but no examples and my code is crashing. I have other tables with unique constraints on a single column, but I want to add a constraint to the table on two columns. This is what I have that is causing an SQLiteException with the message "syn...
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BigDecimal setScale and round

What is the difference between this two call? (Is there any?) 2 Answers 2 ...
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Can I serve multiple clients using just Flask app.run() as standalone?

I know I can link Flask with Apache or other web servers. But, I was thinking of running Flask as a standalone server serving multiple clients simultaneously. ...
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Why does GCC generate such radically different assembly for nearly the same C code?

While writing an optimized ftol function I found some very odd behaviour in GCC 4.6.1 . Let me show you the code first (for clarity I marked the differences): ...
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Why does typeof NaN return 'number'?

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How to change column datatype from character to numeric in PostgreSQL 8.4

I am using following query: 3 Answers 3 ...