大约有 40,000 项符合查询结果(耗时:0.0741秒) [XML]

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Optimise PostgreSQL for fast testing

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Undefined symbols for architecture i386: _OBJC_CLASS_$_SKPSMTPMessage", referenced from: error

...r the "Compile Sources" step of the "Build Phases" tab of your target. Normally Xcode does this for you, but sometimes it loses the plot and you need to add the .m file manually. To do this: TargetSettings -> Build Phases -> Compile Sources -> add your .m class ->Build and Run ...
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How do I check if a list is empty?

...cMahon - it's a trade-off between explicitness and type flexibility. generally, "being explicit" means not doing "magical" things. on the other hand, "duck typing" means working with more general interfaces, rather than explicitly checking for types. so something like if a == [] is forcing a part...
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How can I check if the current date/time is past a set date/time?

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How to list out all the subviews in a uiviewcontroller in iOS?

I want to list out all the subviews in a UIViewController . I tried self.view.subviews , but not all of the subviews are listed out, for instance, the subviews in the UITableViewCell are not found. Any idea? ...
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How to start an application using android ADB tools?

... @IgorGanapolsky if no activities found, it's a Service app and has no Activity at all. – m3nda Sep 6 '16 at 8:42 1 ...
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Multiprocessing vs Threading Python [duplicate]

... There is actually a good deal of difference: eli.thegreenplace.net/2012/01/16/… – Andrew Sledge May 29 '13 at 11:36 ...
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How to configure logging to syslog in Python?

...nd remember config the /etc/syslog.d/conf file, and restart syslog/rsyslog service – linrongbin Oct 25 '17 at 6:59 5 ...
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Declare and initialize a Dictionary in Typescript

... Very helpful sample code. The "interface IDictionary" contains a small typo, as there is a reference to IPerson. – mgs Apr 9 '13 at 5:31 ...
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How do you detect where two line segments intersect? [closed]

...f r × s = 0 and (q − p) × r ≠ 0, then the two lines are parallel and non-intersecting. If r × s ≠ 0 and 0 ≤ t ≤ 1 and 0 ≤ u ≤ 1, the two line segments meet at the point p + t r = q + u s. Otherwise, the two line segments are not parallel but do not intersect....