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Swift - How to convert String to Double

...ocumentation:(They are not locale-aware) The following convenience methods all skip initial space characters (whitespaceSet) and ignore trailing characters. They are not locale-aware. NSScanner or NSNumberFormatter can be used for more powerful and locale-aware parsing of numbers. ...
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What is Rack middleware?

...tages of processing a request - separation of concerns being a key goal of all well designed software products. For example with Rack I can have separate stages of the pipeline doing: Authentication: when the request arrives, are the users logon details correct? How do I validate this OAuth, HTTP...
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Catching java.lang.OutOfMemoryError?

... to do so). In general, the OutOfMemoryError occurs due to a block memory allocation that cannot be satisfied with the remaining resources of the heap. When the Error is thrown the heap contains the same amount of allocated objects as before the unsuccessful allocation and now is the time to drop ...
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Find location of a removable SD card

...l Android 4.4, the official Android platform has not supported SD cards at all except for two special cases: the old school storage layout where external storage is an SD card (which is still supported by the platform today), and a small feature added to Android 3.0 where it would scan additional SD...
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How do I save a String to a text file using Java?

In Java, I have text from a text field in a String variable called "text". 24 Answers ...
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How to use a variable to specify column name in ggplot

... "cumbersome"? Non-standard evaluation in R is ironically the most cumbersome "feature" I have ever encountered in a programming language. Truly maddening. – jessexknight Feb 4 at 18:10 ...
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How to print the values of slices

... ¯\_(ツ)_/¯ If you find short solution please add it as an answer to this question. I’m betting that is what most people are looking for. – Pylinux Dec 7 '19 at 14:03 ...
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Disabling browser print options (headers, footers, margins) from page?

...t consistent. Safari still does not support setting printer page margin at all, but all the other major browsers now support it. With the @page directive, you can specify printer margin of the page (which is not the same as normal CSS margin of an HTML element): <html xmlns="http://www.w3.org/199...
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How to create a directory using nerdtree

... type a I get an error Error detected while processing function <SNR>_15_showMenu..... . Culprit could be some other plugin. I will debug it later. thanks. – Nick Vanderbilt May 23 '10 at 0:02 ...
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targetContentOffsetForProposedContentOffset:withScrollingVelocity without subclassing UICollectionVi

...or anyone who is reading this in the future. First I set up the subclass call MyCollectionViewFlowLayout and then in interface builder I changed the collection view layout to Custom and selected my flow layout subclass. Because you're doing it this way you can't specify items sizes, etc... in IB s...