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How to organize large R programs?
...ome silly performance mistakes when I first started out with R.
When to extract logical units into their own physical units (like source files and bigger groupings like packages)? I have two cases. First, if the file gets too large and scrolling around among logically unrelated units is an anno...
TypeScript: problems with type system
...
Since TypeScript 1.8, it will recognize the constant string argument "2d", and .getContext("2d") will return with the type CanvasRenderingContext2D. You don't need to cast it explicitly.
– Markus Jarderot
Jun 13 '16 at 5:55
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Why does C# not provide the C++ style 'friend' keyword? [closed]
...ly define which members are being passed between the two classes, which is extra work but may also make the code easier to understand.
If somebody has an example of a reasonable use of "friend" that cannot be simulated using interfaces, please share it! I'd like to better understand the difference...
How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
...es
// Foreign key to customer
[ForeignKey("Customer")]
public string CustomerID { get; set; }
public virtual Customer Customer { get; set; }
}
The ForeignKeyAttribute constructor takes a string as a parameter: if you place it on a foreign key property it represents the name of the...
Differences between Emacs and Vim
...ared to using a GUI editor/IDE and using something like python/awk/etc for extra tasks is up to you.
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MFC的多国语言界面的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...不同语言版本中按钮的点击次数的统计。
（1） 在String Table中分别添加中英文的IDS_STRING_SAMPLE资源，内容如下表所示。
中文
这个一个中文提示信息。\n点击次数：%d。
英文
This is a prompt message in English.\nClick Ti...
从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
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final static int RECOMMENDER_NUM = 3;
public static void main(String[] args) throws IOException, TasteException {
String file = "datafile/item.csv";
DataModel model = new FileDataModel(new File(file));
UserSimilarity user = new EuclideanDistanceSimilarity(mode...
How to determine MIME type of file in android?
...this:
// url = file path or whatever suitable URL you want.
public static String getMimeType(String url) {
String type = null;
String extension = MimeTypeMap.getFileExtensionFromUrl(url);
if (extension != null) {
type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extensi...
Detecting if an NSString contains…?
How can I detect if a string contains a certain word? For example, I have a string below which reads:
7 Answers
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Finding the number of days between two dates
...t all of Europe moved the clock back an hour. That means that today has an extra 3600 seconds, and that ought to be reflected in the UNIX timestamps. If it is, then that means that today will count for two days with the above way of computing the number of days. And I'm not even starting about leap ...