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Distributed sequence number generation?
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sequence numbers is easy to set position for bitmap index, but unique id sometimes too long (64bit or 128bit), how can unique id mapping to a bitmap index position? Thanks.
– brucenan
Nov 13 '15 at 6:30
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What is InnoDB and MyISAM in MySQL?
...lti-user concurrency and performance. InnoDB stores user data in clustered indexes to reduce I/O for common queries based on primary keys. To maintain data integrity, InnoDB also supports FOREIGN KEY referential-integrity constraints.
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git - diff of current changes before committing
...it diff by default shows difference between your working directory and the index (staging area for the next commit).
If you have already added (staged) the changes to the staging area, git diff --staged does the job. Staging area is the data from which the next commit will be formed by git commit....
Is the LIKE operator case-sensitive with MSSQL Server?
... Your example uses a variable and a leading wildcard. But against a column indexed with a case insensitive collation like 'a%' could use the index and the upper version couldn't.
– Martin Smith
Mar 5 '15 at 22:46
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IIS - 401.3 - Unauthorized
...new site on IIS Manager, mapped it to a folder on my file system and added index.html to the folder. I have set the port to 85 for this site. When I try to access http://localhost:85/index.html , I get the following error message:
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Bash array with spaces in elements
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It's not necessary to loop over the indexes when you can loop over the elements with for f in "${FILES[@]}".
– Mark Edgar
Feb 1 '12 at 2:44
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Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
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Since I can't conceive any use of zipping on collections other than indexed ones (Lists) and I am a big fan of simplicity, this would be my solution:
<A,B,C> Stream<C> zipped(List<A> lista, List<B> listb, BiFunction<A,B,C> zipper){
int shortestLength = Mat...
App Inventor 2 列表代码块 · App Inventor 2 中文网
...行切片来返回一个列表。
返回的列表包含输入列表中从index1开始到但不包括index2的项目。
案例：列表遍历
列表代码块中没有提供遍历的方法，遍历逻辑在控制代码块中，提供 2 种遍历方式：
方法1：控制代码块 > 从列...
Iterating through a JSON object
... in the 600 characters you can put in a comment. I already said you should index the dict to get at the value associated with a key. I'm not sure what you want to iterate over. Learning about built-in Python types is the next step.
– Thomas Wouters
Apr 28 '10 a...
The ViewData item that has the key 'MY KEY' is of type 'System.String' but must be of type 'IEnumera
...eal);
db.SubmitChanges();
return RedirectToAction("Index");
}
catch
{
var db = new DB();
IEnumerable<SelectListItem> basetypes = db.Basetypes.Select(
b => new SelectListItem { Value = b.basetype, Text = b...