大约有 40,000 项符合查询结果(耗时:0.0676秒) [XML]

https://stackoverflow.com/ques... 

Simple way to transpose columns and rows in SQL?

...u do not have access to those functions this can be replicated using UNION ALL to UNPIVOT and then an aggregate function with a CASE statement to PIVOT: Create Table: CREATE TABLE yourTable([color] varchar(5), [Paul] int, [John] int, [Tim] int, [Eric] int); INSERT INTO yourTable ([color], [Pa...
https://stackoverflow.com/ques... 

How to split text without spaces into list of words?

...el the distribution of the output. A good first approximation is to assume all words are independently distributed. Then you only need to know the relative frequency of all words. It is reasonable to assume that they follow Zipf's law, that is the word with rank n in the list of words has probabilit...
https://stackoverflow.com/ques... 

How do you pass arguments to define_method?

... your defined method accepts arguments. When you define a method you're really just nicknaming the block and keeping a reference to it in the class. The parameters come with the block. So: define_method(:say_hi) { |other| puts "Hi, " + other } ...
https://stackoverflow.com/ques... 

Why does “split” on an empty string return a non-empty array?

...ngleton array containing just the input string is returned, Second, remove all the rightmost empty strings. This is the reason ",,,".split(",") returns empty array. According to this, the result of "".split(",") should be an empty array because of the second step, right? It should. Unfortunately,...
https://stackoverflow.com/ques... 

ListView inside ScrollView is not scrolling on Android

...ements its own scrolling and it just doesn't receive gestures because they all are handled by the parent ScrollView. I strongly recommend you to simplify your layout somehow. For example you can add views you want to be scrolled to the ListView as headers or footers. UPDATE: Starting from API Leve...
https://stackoverflow.com/ques... 

AppStore - App status is ready for sale, but not in app store

... but I found that the app goes live after resetting the dates again, especially if there's been app rejections in the past. I guess it messes up with the dates. Looks like sometimes if you do nothing and just follow the instructions, the app will never go live. ...
https://stackoverflow.com/ques... 

Cannot import XSSF in Apache POI

...in your project, along with the dependencies for it You can get a list of all the components and their dependencies on the POI website here. What you probably want to do is download the 3.11 binary package, grab the poi-ooxml jar from it, and the dependencies in the ooxml-lib directory. Import the...
https://stackoverflow.com/ques... 

Cannot generate iOS App archive in xcode

... Check Build Settings: Skip install is NO for the main project target Skip install is YES for framework (sub-projects) targets In Build Phases for sub-projects, Copy Headers needs to be in Project, not Public (does not apply if building static library) Inst...
https://stackoverflow.com/ques... 

Git pull after forced update

... the working tree since <commit> are discarded. If you want to actually keep whatever changes you've got locally - do a --soft reset instead. Which will update the commit history for the branch, but not change any files in the working directory (and you can then commit them). Rebase You ca...
https://stackoverflow.com/ques... 

How can I convert spaces to tabs in Vim or Linux?

... Using Vim to expand all leading spaces (wider than 'tabstop'), you were right to use retab but first ensure 'expandtab' is reset (:verbose set ts? et? is your friend). retab takes a range, so I usually specify % to mean "the whole file". :set t...