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Does ARC support dispatch queues?

... The short a<em>nem>swer: YES, ARC retai<em>nem>s <em>a<em>nem>dem> releases dispatch queues. <em>A<em>nem>dem> <em>nem>ow for the lo<em>nem>g a<em>nem>swer… If your deployme<em>nem>t target is lower tha<em>nem> i<em>OSem> 6.0 or Mac <em>OSem> X 10.8 You <em>nem>eed to use dispatch_retai<em>nem> <em>a<em>nem>dem> dispatch_release o<em>nem> your queue. ARC does <em>nem>ot ma<em>nem>age ...
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Get the date (a day before curre<em>nem>t time) i<em>nem> Bash

... if you have G<em>Nem>U date <em>a<em>nem>dem> i u<em>nem>derstood you correctly $ date +%Y:%m:%d -d "yesterday" 2009:11:09 or $ date +%Y:%m:%d -d "1 day ago" 2009:11:09 share | ...
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How should I pri<em>nem>t types like off_t <em>a<em>nem>dem> size_t?

I'm tryi<em>nem>g to pri<em>nem>t types like off_t <em>a<em>nem>dem> size_t . What is the correct placeholder for pri<em>nem>tf() that is portable ? 9 ...
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How do you echo a 4-digit U<em>nem>icode character i<em>nem> Bash?

I'd like to add the U<em>nem>icode skull <em>a<em>nem>dem> cr<em>osem>sbo<em>nem>es to my shell prompt (specifically the 'SKULL <em>A<em>Nem>Dem> CR<em>OSem>SBO<em>Nem>ES' (U+2620)), but I ca<em>nem>'t figure out the magic i<em>nem>ca<em>nem>tatio<em>nem> to make echo spit it, or a<em>nem>y other, 4-digit U<em>nem>icode character. Two-digit o<em>nem>e's are easy. For example, echo -e "\x55", . ...
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Why does multiprocessi<em>nem>g use o<em>nem>ly a si<em>nem>gle core after I import <em>nem>umpy?

...er here. It tur<em>nem>s out that certai<em>nem> Pytho<em>nem> modules (<em>nem>umpy, scipy, tables, p<em>a<em>nem>dem>as, skimage...) mess with core affi<em>nem>ity o<em>nem> import. As far as I ca<em>nem> tell, this problem seems to be specifically caused by them li<em>nem>ki<em>nem>g agai<em>nem>st multithreaded Ope<em>nem>BLAS libraries. A workarou<em>nem>d is to reset the task affi<em>nem>ity us...
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Repeat comm<em>a<em>nem>dem> automatically i<em>nem> Li<em>nem>ux

Is it p<em>osem>sible i<em>nem> Li<em>nem>ux comm<em>a<em>nem>dem> li<em>nem>e to have a comm<em>a<em>nem>dem> repeat every <em>nem> seco<em>nem>ds? 13 A<em>nem>swers ...
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The best way to remove duplicate values from <em>Nem>SMutableArray i<em>nem> Objective-C?

...wrote the a<em>nem>swer below i<em>nem> 2009; i<em>nem> 2011, Apple added <em>Nem>SOrderedSet to i<em>OSem> 5 <em>a<em>nem>dem> Mac <em>OSem> X 10.7. What had bee<em>nem> a<em>nem> algorithm is <em>nem>ow two li<em>nem>es of code: <em>Nem>SOrderedSet *orderedSet = [<em>Nem>SOrderedSet orderedSetWithArray:yourArray]; <em>Nem>SArray *arrayWithoutDuplicates = [orderedSet array]; If you are worried ab...
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i<em>OSem>开发调试技巧总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术

i<em>OSem>开发调试技巧总结对于软件开发而言,调试是必须学会的技能,重要性不言而喻。对于调试的技能,基本上是可以迁移的,也就是说你以前在其他平台上掌握的很多调...对于软件开发而言,调试是必须学会的技能,重要性不言...
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Iterati<em>nem>g through directories with Pytho<em>nem>

I <em>nem>eed to iterate through the subdirectories of a give<em>nem> directory <em>a<em>nem>dem> search for files. If I get a file I have to ope<em>nem> it <em>a<em>nem>dem> cha<em>nem>ge the co<em>nem>te<em>nem>t <em>a<em>nem>dem> replace it with my ow<em>nem> li<em>nem>es. ...
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Getti<em>nem>g error: Peer authe<em>nem>ticatio<em>nem> failed for user “p<em>osem>tgres”, whe<em>nem> tryi<em>nem>g to get pgsql worki<em>nem>g with

...rks by obtai<em>nem>i<em>nem>g the clie<em>nem>t's operati<em>nem>g system user <em>nem>ame from the ker<em>nem>el <em>a<em>nem>dem> usi<em>nem>g it as the allowed database user <em>nem>ame (with optio<em>nem>al user <em>nem>ame mappi<em>nem>g). This method is o<em>nem>ly supported o<em>nem> local co<em>nem><em>nem>ectio<em>nem>s. Password authe<em>nem>ticatio<em>nem> The password-based authe<em>nem>ticatio<em>nem> methods are md5 <em>a<em>nem>dem> pas...