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Determine the number of NA values in a column
...nt the number of NA values in a data frame column. Say my data frame is called df , and the name of the column I am considering is col . The way I have come up with is following:
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Why does Iterable not provide stream() and parallelStream() methods?
...ering why the Iterable interface does not provide the stream() and parallelStream() methods. Consider the following class:
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When to use thread pool in C#? [closed]
...l vs. create my own threads. One book recommends using a thread pool for small tasks only (whatever that means), but I can't seem to find any real guidelines. What are some considerations you use when making this programming decision?
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UnmodifiableMap (Java Collections) vs ImmutableMap (Google) [duplicate]
...// Will return "F".
In contrast to that, the ImmutableMap of Guava is really immutable: It is a true copy of a given map, and nobody may modify this ImmutableMap in any way.
Update:
As pointed out in a comment, an immutable map can also be created with the standard API using
Map<String, S...
What is the best way to solve an Objective-C namespace collision?
...ndle unloading (OS X 10.4 or later, no GNUStep support), and performance really isn't an issue for you, I believe that you could load one framework every time you need to use a class from it, and then unload it and load the other one when you need to use the other framework.
My initial idea was to ...
How to edit log message already committed in Subversion?
...way to edit the log message of a certain revision in Subversion? I accidentally wrote the wrong filename in my commit message which could be confusing later.
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How to get the filename without the extension from a path in Python?
...hould merit it's own official command? Something like os.path.filename(path_to_file) instead of os.path.splitext(os.path.basename(path_to_file))[0]
– Fnord
Jul 2 '14 at 17:13
20
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NSDate beginning of day and end of day
...o: noon)!
let specificDate = Date("2020-01-01")
extension Date {
init(_ dateString:String) {
let dateStringFormatter = DateFormatter()
dateStringFormatter.dateFormat = "yyyy-MM-dd"
dateStringFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX") as Locale
l...
INT 10H 中断介绍 - C/C++ - 清泛网 - 专注C/C++及内核技术
INT 10H 中断介绍int_10h_instructionsINT 10H 是由 BIOS 对屏幕及显示器所提供的服务程序，而后倚天公司针对倚天中文提供了许多服务程序，这些服务程序也加挂在 INT 10H ...
INT 10H 是由 BIOS 对屏幕及显示器所提供的服务程序。使用 INT 10H...
What are the main disadvantages of Java Server Faces 2.0?
...ts which seem to make development much faster than with ASP.NET MVC, especially on AJAX-heavy sites. Integration testing looked very nice too.
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