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UICollectionView current visible cell index
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Excellent, but if the cells have a space between them then visibleIndexPath sometimes will be nil, So if (visibleIndexPath) == nil { let cells = collectionView.visibleCells() let visibleIndexPath = collectionView....
UITableView - scroll to the top
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Excellent summary. When you have section headers you'll have to use option4 scrollToHeader.
– Vincent
Jan 30 '17 at 8:40
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Get the last inserted row ID (with SQL statement) [duplicate]
...what way they're different (and might give you unexpected results) in this excellent blog post by Pinal Dave here.
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tinyxml XML解析库下载（tinyxml2.h 和 tinyxml2.cpp） - 源码下载 - 清泛...
...库下载（tinyxml2.h 和 tinyxml2.cpp）tinyxml XML解析C++编写的，一个 h，一个 cpp，绿色小巧，直接加入工程源码编译，跨平台。使用方法参见《C++ 读写xml方法整理（持续更新）》tinyxml2 h *O C++编写的，一个.h，一个.cpp，绿色小巧，直...
Getting started with F# [closed]
...generally becoming comfortable with the syntax.
Finally, I read the truly excellent 30-point guide Why use F# on http://fsharpforfunandprofit.com/. It takes you step-by-step through all of the major parts of the language describing how you can take advantage of them - with an eye towards C# develop...
Exception handling in R [closed]
...airly straight forward, and there are plenty of good tutorials on that. A excellent explanation of error handling in R can be found in Hadley Wickham's book Advanced-R, and what follows is a very basic intro to withCallingHandlers() and withRestarts() in as few words as possible:
Lets say a low le...
How can I concatenate NSAttributedStrings?
...above answers that let you avoid mutability in your own code is to use the excellent NSAttributedString+CCLFormat category on NSAttributedStrings that lets you write something like:
NSAttributedString *first = ...;
NSAttributedString *second = ...;
NSAttributedString *combined = [NSAttributedString...
WARNING: Can't verify CSRF token authenticity rails
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Excellent! Been searching for a while for this answer. Works seamlessly. Thanks!
– cassi.lup
Apr 30 '13 at 19:27
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How to convert an Int to a String of a given length with leading zeros to align?
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The Java library has pretty good (as in excellent) number formatting support which is accessible from StringOps enriched String class:
scala> "%07d".format(123)
res5: String = 0000123
scala> "%07d".formatLocal(java.util.Locale.US, 123)
res6: String = 000012...
How to Batch Rename Files in a macOS Terminal?
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Excellent! Love the "show what would be changed" part BEFORe it actually renames things!
– Ben Duffin
Jul 13 '16 at 15:08
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