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How can I add a boolean value to a NSDictionary?

... Get a compiler error: Incompatible pointer types initializing NSMutableDictionary * with an expression of type NSDictionary. If you change the declaration to NSDictionary instead, get compiler error: Expected method to write dictionary elem...
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What's the difference between 'git merge' and 'git rebase'?

... always when programmers are involved there is a non-neglectable chance of errors aka bugs. If a merge error happens the whole team or community can see the merge and verify whether a bug was introduced there. The history of the rebase stays in 1 developer's repo and even there it has only limited l...
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PostgreSQL: Which Datatype should be used for Currency?

... That's not why you avoid floating point. Even Numeric will have rounding errors if you divide by anything that doesn't divide into a power of ten, no matter what precision you use. (Precision of 2 is a Bad Idea anyway... check the docs.) – Doradus Jan 9 '18 ...
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Sublime Text 2 - Link with Editor / Show file in sidebar

... I tested the solution proposed by Albert Català, but it causes an error when a popup window appears, with the 'Quick Switch Projects' command for example. So here is my modified version to avoid errors : import sublime import sublime_plugin class LinkWithEditor(sublime_plugin.EventListen...
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Difference between object and class in Scala

....type = Commerce$@6eb2756 scala> classOf[Commerce] <console>:23: error: not found: type Commerce classOf[Commerce] ^ scala> new Commerce <console>:23: error: not found: type Commerce new Commerce ^ ...
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Difference between const & const volatile

...rked as const volatile will not be permitted to be changed by the code (an error will be raised due to the const qualifier) - at least through that particular name/pointer. The volatile part of the qualifier means that the compiler cannot optimize or reorder access to the object. In an embedded sy...
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How to detect Adblock on my website?

...your layout gets distorted or ad loads slowly, user can catch a glimpse of error that doesn't relate to him. Also be aware that Adblock is taking measures to block obtrusive messages targeted at ABP users. If you want to ask user for unblocking, do it through simple hideable message that sits outsi...
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is not JSON serializable

... Now getting error --> 'NoneType' object has no attribute 'concrete_model' ... And using Django 1.4+ – tuna May 28 '13 at 11:42 ...
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How can I make pandas dataframe column headers all lowercase?

... df.columns = df.columns.str.lower() is the easiest but will give an error if some headers are numeric if you have numeric headers then use this: df.columns = [str(x).lower() for x in df.columns] share | ...
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Why are Oracle table/column/index names limited to 30 characters?

...RRM which is limited to 255 characters, and which most clients use to make errors visible. I suspect increasing the allowable size of constraint names significantly would impact the ability to report on the violations (especially where a constraint violation has been bubbled up through a few layers ...